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Tungray Technologies Inc Reports Unaudited 2024 First Half Financial Results

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SINGAPORE, Dec. 31, 2024 /PRNewswire/ — Tungray Technologies Inc (“Tungray” or the “Company”), a global Engineer-to-Order (ETO) company, today reported its unaudited financial results for the six months ended June 30, 2024.

First Half 2024 Financial Highlights

Total revenues for the six months ended June 30, 2024 increased by 1.5% to $5.4 million, compared to $5.3 million in the same period of 2023.Gross margin for the six months ended June 30, 2024 was 46.7%, compared to 53.5% for the same period in 2023.Operating loss for the six months ended June 30, 2024, was $0.9 million, compared to an operating income of $0.1 million for the same period in 2023.Net loss for the six months ended June 30, 2024, was $0.8 million, compared to net income of $0.2 million for the same period in 2023.

Recent Developments and Strategic Highlights:

Cost-Cutting Measures:
The Company has implemented targeted cost control actions aimed at reducing expenses, enhancing operational efficiency, and renegotiating supplier contracts.

These actions include:

Identifying and utilizing high-trade volume suppliers.Leveraging volume to negotiate favorable rates for common-use components.

Revenue Enhancement:
To drive sales growth, the Company is exploring potential horizontal strategic partnerships to access new, high-value capabilities.

These initiatives include:

Introducing new lines of business through potential partnerships with existing companies.Utilizing the “market-for-tech” model to leverage Singapore’s hub position for regional business expansion.Exploring technologies and services such as metal 3D printing for precision engineering, standardized manufacturing of medical components, and contract repair work for aviation components, such as aircraft engine fan blades and turbines.Enhancing sales and market penetration by hiring a dedicated business-focused market and sales manager. This initiative will focus on:Increasing market penetration of non-printer related markets in the Southeast Asia (SEA) region.Focusing primarily on the semiconductor, automotive and non-printer related consumer product sectors.

Restatement of Previously Issued Financial Statements

During the course of preparing the unaudited condensed consolidated financial statements for the six months ended June 30, 2024, the Company identified misstatements in its previously issued consolidated financial statements for the six months ended June 30, 2023 as below, and as a result the Company has restated the previously issued consolidated financial statements for the six months ended June 30, 2023 in accordance with ASC 250 Accounting Changes and Error Corrections, to reflect the effects of the restatement adjustments and to make certain corresponding disclosures.

The categories of adjustments and their impacts on previously issued financial statements are described below and identified in the column entitled “Reference”:

a. The Company failed to record the correct income tax expense, taxes payable and retained earnings due to improper identification of non-deductible expenses which were not detected because of not performing a reconciliation between the financial statements and tax return. Such failure has resulted in the misstatements of “Income tax expense”, “Net income attributable to Tungray Technologies Inc”, and “Foreign currency translation adjustment” for the six months ended June 30, 2023. The impact to the accumulated other comprehensive loss and foreign currency translation adjustment was a result of the foreign currency translation difference to the misstatement.

b. The Company failed to take the purchase option into consideration for the finance lease and used the incorrect useful life for the assets amortization. Such failure has resulted in the misstatement of “Cost of revenue”, “Net income attributable to Tungray Technologies Inc” and “Foreign currency translation adjustment” for the six months ended June 30, 2023. The impact to the accumulated other comprehensive loss and foreign currency translation adjustment was a result of the foreign currency translation difference to the misstatement.

The effects of restatement adjustments to the line items are as below:

For the six months ended June 30,

2023

As previously

reported

Adjustment

 Reference 

As restated

Cost of revenues

$

2,480,629

$

12,590

 b

$

2,493,219

Income tax expense

(88,638)

(16,853)

 a

(105,491)

Foreign currency translation adjustment

(305,719)

12,507

a, b

(293,212)

Management Commentary

Mr. Wanjun Yao, Chairman and Chief Executive Officer of Tungray, commented, “This year, we faced challenges that impacted our year-over-year performance, particularly in revenue growth and profit margins. To remain viable amidst the price competition, we are implementing aggressive cost-cutting measures and seeking efficiencies in production. In addition, to complement our cost-cutting measures, we are also exploring new revenue streams and focusing on higher-margin products to improve profitability.”

“Despite significant headwinds from fierce price competition, our commitment to innovation and quality improvements remains unchanged, and we remain focused on delivering sustainable growth and innovation as our long-term strategy. During this reporting period, we expensed $0.4 million in R&D expenses, a slight increase compared to the same period last year. We are confident that our ongoing initiatives will position us well when market conditions improve.”

“As we move forward, we are dedicated to adapting to the evolving market landscape. To enhance Tungray’s business portfolio and adapt to high-growth markets, we are actively exploring 3D metal printing solutions tailored for high-end sectors such as commercial aviation, offshore marine, and oil & gas industries in which Singapore serves as a strategic hub. We believe potential expansion into 3D metal printing will complement our current product and service offerings and positions us to compete well in the provision of advanced, precision-engineered components. We are confident that this strategic initiative will elevate Tungray’s market presence, generate new revenue streams, and ultimately create greater value for our shareholders. We anticipate that the steps we’re taking now will yield improvements and help us return to a sustained growth trajectory in the upcoming years.”

First Half 2024 Financial Results

Total Revenues

Total revenues increased slightly by 1.5% to $5.4 million for the six months ended June 30, 2024, compared to $5.3 million for the six months ended June 30, 2023.

Revenues from customized products increased by $0.5 million or 11.6% for the six months ended June 30, 2024, primarily driven by the delivery of a major customization project during the period.Revenues from standardized products decreased by $0.4 million, or 30.5% for the six months ended June 30, 2024, mainly due to the impact of increasing industry competition resulting in lower sales pricing.

Cost of Revenues

Total costs increased by 16.2% to $2.9 million for the six months ended June 30, 2024, compared to $2.5 million for the six months ended June 30, 2023. 

The cost of revenues for customized products rose by $0.6 million, or 31.3% for the same period ended June 30, 2024, in line with the revenue increase.The cost of revenues for standardized products decreased by $0.2 million, or 21.1% for the same period ended June 30, 2024, corresponding with the revenue decline due to increased industry competition.

Gross Profit

Gross profit was $2.5 million for the six months ended June 30, 2024, representing a decrease of 11.4% year over year from $2.9 million for the six months ended June 30, 2023. Gross margin was 46.7% for the six months ended June 30, 2024, compared to 53.5% for the same period in 2023. The decrease in gross profit and gross margin was mainly due to the increase of raw materials and labor costs.

Gross profit for customized products was $2.2 million for the six months ended June 30, 2024, a decrease of 3.6% as compared to $2.3 million for the six months ended June 30, 2023. Gross margin for customized products was 48.6% for the six months ended June 30, 2024, and 56.3% for the six months ended June 30, 2023.Gross profit for standardized products was $0.3 million for the six months ended June 30, 2024, a decrease of 42.1% as compared to $0.6 million for the six months ended June 30, 2023. Gross margin for standardized products was 37.2% for the six months ended June 30, 2024, and 44.6% for the six months ended June 30, 2023.

Operating Expenses

Total operating expenses were $3.5 million for the six months ended June 30, 2024, representing an increase of 26.5% year over year from $2.8 million for the six months ended June 30, 2023.

Selling expenses increased by $0.1 million or 38.8% from $0.2 million for the six months ended June 30, 2023 to $0.3 million for the six months ended June 30, 2024. The increase was mainly due to an increase of advertisement expense for business expansion.General and administrative expenses increased by $0.6 million or 29.8% from $2.1 million for the six months ended June 30, 2023 to $2.7 million for the six months ended June 30, 2024. The increase was mainly attributed to a $0.5 million increase in salary and benefits for talent retention, as well as a $0.1 million increase in professional service fee related to the Company’s initial public offering during the six months ended June 30, 2024 as compared with the same period last year.R&D expenses increased slightly by 3.8% for the six months ended June 30, 2024 as compared with the same period last year. The increase was consistent with the R&D plan the Company previously set out.

(Loss) Income from operations

Loss from operations was $0.9 million for the six months ended June 30, 2024, compared to income from operations of $0.1 million for the six months ended June 30, 2023.

Other Income, net

Total other income was $0.2 million for the six months ended June 30, 2024 and 2023.

Income tax expense

Income tax expense increased by approximately $20,000 or 19.6%, from $0.1 million for the six months ended June 30, 2023 to $0.1 million for the six months ended June 30, 2024.

Net (Loss) Income

Net loss was $0.8 million for the six months ended June 30, 2024, compared to net income of $0.2 million for the six months ended June 30, 2023.

About Tungray Technologies Inc

Tungray Technologies Inc is an Engineer-to-Order (ETO) company that provides customized industrial manufacturing solutions to original equipment manufacturers (OEMs) in the semiconductors, printers, electronics, and home appliances industries. With research, development and manufacturing bases in Singapore and China, Tungray designs, develops, and delivers a wide range of industrial products ranging from customized manufacturing machineries, direct drive and linear direct current motors, to induction welding equipment. As an ETO company with more than two decades of experience, Tungray takes pride in its ability to deliver quality customized industrial solutions that fulfil its customers’ unique needs and specifications. For more information, visit the Company’s website at http://tungray.com/.

Forward-Looking Statements

All statements other than statements of historical fact in this announcement are forward-looking statements. These forward-looking statements involve known and unknown risks and uncertainties and are based on current expectations and projections about future events and financial trends that the Company believes may affect its financial condition, results of operations, business strategy and financial needs. Investors can identify these forward-looking statements by words or phrases such as “may,” “will,” “expect,” “anticipate,” “aim,” “estimate,” “intend,” “plan,” “believe,” “potential,” “continue,” “is/are likely to” or other similar expressions. The Company undertakes no obligation to update forward-looking statements to reflect subsequent occurring events or circumstances, or changes in its expectations, except as may be required by law. Although the Company believes that the expectations expressed in these forward-looking statements are reasonable, it cannot assure you that such expectations will turn out to be correct, and the Company cautions investors that actual results may differ materially from the anticipated results and encourages investors to review other factors that may affect its future results in the Company’s registration statement and in its other filings with the SEC.

For more information, please contact:

Investor Relations:
Bill Zima
Email: tungray@icrinc.com

Tungray Technologies Inc and Subsidiaries

Unaudited Condensed Consolidated Balance Sheets

(Stated in U.S. Dollars, except for share data, or otherwise noted)

As of

June 30, 2024

As of

December 31, 2023

As Restated

ASSETS

CURRENT ASSETS

Cash

$

9,965,474

$

10,802,405

Accounts and notes receivable, net

2,732,116

3,574,739

Accounts receivable – related parties

295,487

319,589

Inventories, net

1,424,207

2,283,809

Prepayments, net

831,679

259,950

Prepayments – related parties

1,462,583

1,048,745

Other receivables and other current assets, net

805,048

215,651

Other receivables – related parties

461,924

23,816

Total current assets

17,978,518

18,528,704

PROPERTY AND EQUIPMENT, NET

6,184,336

6,326,369

OTHER ASSETS

    Prepaid expenses and deposits

79,592

23,163

Prepayment for land use right

1,988,386

Long-term investment

206,407

211,271

Operating right-of-use assets

1,594,282

712,261

Intangible assets, net

72,884

55,842

Deferred initial public offering (“IPO”) costs

1,192,734

Total non-current assets

3,941,551

2,195,271

Total assets

28,104,405

27,050,344

LIABILITIES AND SHAREHOLDERS’ EQUITY

CURRENT LIABILITIES

Accounts payable

1,280,101

1,048,271

Accounts payable – related parties

515,276

498,923

Contract liabilities

3,859,463

4,010,832

Accrued expenses and other payables

965,192

1,289,941

Other payables – related parties

284,235

670,866

Current portion of banking facilities

156,654

140,162

Current portion of operating lease liabilities

236,305

46,232

Current portion of operating lease liabilities – related party

269,960

123,094

Taxes payable

635,216

1,206,141

Total current liabilities

8,202,402

9,034,462

OTHER LIABILITIES

Banking facilities

1,810,412

1,951,389

Operating lease liabilities

769,997

10,603

Operating lease liabilities – related party

228,627

339,450

Total other liabilities

2,809,036

2,301,442

Total liabilities

11,011,438

11,335,904

COMMITMENTS AND CONTINGENCIES

SHAREHOLDERS’ EQUITY

Class A ordinary shares ($0.0001 par value; 400,000,000 and 400,000,000 shares authorized as of June 30, 2024 and December 31, 2023, respectively; 11,793,485 and 10,440,000 shares issued and outstanding as of June 30, 2024 and December 31, 2023, respectively)

1,179

1,044

Class B ordinary shares ($0.0001 par value; 100,000,000 and 100,000,000 shares authorized as of June 30, 2024 and December 31, 2023, respectively; 4,560,000 and 4,560,000 shares issued and outstanding as of June 30, 2024 and December 31, 2023, respectively)

456

456

Additional paid-in capital

3,135,124

332,574

Retained earnings

14,716,555

15,530,562

Statutory reserves

248,761

248,761

Accumulated other comprehensive loss

(913,916)

(284,444)

Total Tungray Technologies Inc shareholders’ equity

17,188,159

15,828,953

NONCONTROLLING INTERESTS

(95,192)

(114,513)

TOTAL EQUITY

17,092,967

15,714,440

Total liabilities and equity

$

28,104,405

$

27,050,344

 

Tungray Technologies Inc and Subsidiaries

Unaudited Condensed Consolidated Statements of Income (Loss) and Comprehensive Loss

(Stated in U.S. Dollars, except for share data, or otherwise noted) 

For the six months ended

June 30,

2024

2023

(Unaudited)

As Restated

(Unaudited)

Revenue – products

$

5,435,786

$

5,313,634

Revenue – related party

42,790

Total revenues

5,435,786

5,356,424

Cost of revenue – products

2,897,866

2,460,361

Cost of revenue – related party

32,858

Total cost of revenues

2,897,866

2,493,219

Gross profit

2,537,920

2,863,205

Operating expenses:

Selling expenses

300,122

216,168

General and administrative expenses

2,735,835

2,106,952

Research and development expenses

447,234

430,809

Total operating expenses

3,483,191

2,753,929

(Loss) Income from operations

(945,271)

109,276

Other income

Other income, net

172,687

128,614

Lease income – related party

9,855

10,263

Financial expenses, net

44,262

22,074

Total other income, net

226,804

160,951

(Loss) Income before income taxes

(718,467)

270,227

Income tax expense

(126,219)

(105,491)

Net (loss) income

(844,686)

164,736

Less: net loss attributable to noncontrolling interests

(30,679)

(38,426)

Net (loss) income attributable to Tungray Technologies Inc

(814,007)

203,162

Net (loss) income

(844,686)

164,736

Foreign currency translation adjustment

(629,472)

(293,212)

Comprehensive loss

(1,474,158)

(128,476)

Less: comprehensive loss attributable to noncontrolling interests

(30,679)

(36,732)

Total comprehensive loss attributable to Tungray Technologies Inc

(1,443,479)

(91,744)

Weighted average number of common shares outstanding – basic and diluted

15,539,074

15,000,000

(Loss) Earnings per common share – basic and diluted

(0.05)

0.01

 

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SOURCE Tungray Technologies Inc

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KTGHR leverages AI-powered real-time transaction capabilities to expand its e-commerce infrastructure, reshaping the engine of enterprise growth.

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DALLAS, April 18, 2026 /PRNewswire-PRWeb/ — Against the backdrop of artificial intelligence continuously reshaping the global business landscape, KTGHR officially launched its new B2B AI-powered intelligent solution for enterprises, dedicated to helping them achieve comprehensive upgrades in cost reduction and efficiency improvement, precise customer acquisition, and intelligent operations.

KTGHR Launches New B2B AI Solution, Reshaping the Engine of Enterprise Growth

As an innovative platform focused on the deep integration of AI technology and business scenarios, KTGHR’s newly released system integrates core functions such as intelligent data analysis, AI-automated marketing, customer behavior prediction, and intelligent customer service. This enables enterprises to make rapid decisions in a complex and ever-changing market environment, achieving sustained business growth.

AI-Driven Precise Customer Acquisition, Comprehensively Improving Conversion Efficiency KTGHR uses advanced algorithm models to conduct in-depth analysis of global market data, helping enterprises accurately target potential customer groups. The system can automatically generate high-conversion marketing content and intelligently distribute it through multiple channels, significantly improving customer reach and conversion rates, enabling enterprises to truly achieve “automated customer acquisition.”

Intelligent Operation System, Relieving Pressure on Human Resource Costs With AI-automated processes, KTGHR can intelligently handle order management, customer follow-up, and data statistics, reducing manual intervention and improving overall operational efficiency. Enterprises can complete global business layouts without a large team.

Integrated B2B Ecosystem, Connecting the Global Supply Chain KTGHR is not just an AI tool platform, but a complete B2B ecosystem. By integrating supply chain resources and intelligent matching mechanisms, it achieves efficient connections between supply and demand, helping companies rapidly expand into international markets and build a borderless business network.

Technology Empowering the Future, Driving Enterprise Digital Transformation KTGHR states that it will continue to increase investment in artificial intelligence, promoting the implementation of more innovative functions to help companies seize opportunities in the digital economy era. With the continuous maturation of AI technology, the B2B industry is ushering in unprecedented development opportunities.

The launch of KTGHR is not only a technological upgrade but also a revolution in business models. For companies seeking breakthroughs and growth, this may be a key step towards the next stage of success.

KTGHR leverages advanced AI algorithms and big data analytics capabilities to achieve a leap from “information matching” to “intelligent decision-making.” The platform can automatically match supply and demand, accurately recommending high-potential partners, significantly reducing the time and cost for companies to find customers and supply chain resources.

By intelligently analyzing market trends and user behavior, KTGHR helps businesses anticipate opportunities, making every transaction more efficient and precise.

End-to-End Intelligent Management, Creating a Seamless Business Ecosystem

KTGHR is not just a transaction platform, but a complete AI business ecosystem. Its core functions include:

AI-powered Intelligent Customer Matching and RecommendationReal-time Data Analysis and Business ForecastingAutomated Order and Supply Chain ManagementSeamless Global Market Connection

Whether you are a small or medium-sized enterprise (SME) or a large multinational corporation, you can achieve digital transformation and global expansion through KTGHR.

Cost Reduction and Efficiency Improvement, Unleashing Business Growth Potential In the traditional B2B model, high communication costs, information asymmetry, and low conversion rates have long been problems. KTGHR, through AI-automated processes, significantly reduces human intervention, helping businesses: Reduce operating costs Increase conversion rates Shorten transaction cycles Enhance customer experience Allow businesses to truly focus on core business and strategic growth.

Seize the AI Business Opportunities and Win the Future As artificial intelligence technology matures, the B2B industry is entering a new era of “intelligent-driven” growth. KTGHR stands at the forefront of this transformation, providing businesses with a sustainable competitive advantage. Choosing KTGHR is not just choosing a platform, but choosing a high-speed gateway to the future of business. For more information, please visit the official KTGHR platform and begin your AI-powered business journey.

Media Contact

William, Ktghr.com, 1 +14255550100 99762, service@ktghr.it.com, Ktghr.com

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SOURCE Ktghr.com

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Link Infinite: Hollyland Pyro Ultra Simplifies Multi-User Monitoring with 4K60 Wireless

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SHENZHEN, China, April 18, 2026 /PRNewswire/ — Hollyland, a global provider of professional wireless audio and video solutions, today announced the launch of Pyro Ultra, the new flagship in its Pyro series, featuring next-gen wireless video transmission technology that enables streamlined setup and uncompromised real-time performance. Engineered for professional creators and high-end production environments, Pyro Ultra balances high-performance transmission with practical on-set usability.

Building on Hollyland’s self-developed TWiFi technology, Pyro Ultra delivers one-to-many transmission, native 4K60 support, and a dedicated ultra-low-latency mode for focus pulling. Fully integrated into the Pyro ecosystem and equipped with DFS-ready operation, it is built to meet the demands of modern digital cinema workflows.

The New Standard for One-to-Many On-Set Transmission

In today’s production landscape, the video village is no longer confined to a single monitor. Directors, assistants, clients, and multiple departments require simultaneous, high-fidelity access to the live image across different positions on set.

While existing systems often force a choice between costly, over-engineered solutions and entry-level gear that struggles in demanding environments, Pyro Ultra offers a third approach. As one-to-many transmission becomes increasingly common across productions, it can introduce practical limits on device count and system stability in larger setups. Pyro Ultra’s Broadcast Mode addresses the issue by enabling a single transmitter to connect with an unlimited number of receivers, creating a fluid workflow. Every department, from lighting to hair and makeup, can monitor independently, which helps eliminate bottlenecks and accelerate decision-making.

Cinematic 4K60 Clarity Without Compromise

Image integrity is central to Pyro Ultra. With support for 4K60 transmission, the system delivers the detail and color accuracy required for high-end videography work. It also supports fractional frame rates, including 23.98 and 59.94 fps, commonly used in broadcast and professional pipelines. Its native compatibility enables direct connection to switchers and monitors without external converters, simplifying the signal path and reducing potential points of failure.

20ms Latency for Precise Focus Pulling

For first assistant camera operators and focus pullers, every millisecond counts. Pyro Ultra’s dedicated Focus Mode cuts latency to just 20ms, ensuring the real-time responsiveness needed for razor-sharp adjustments at any distance. The technical edge provides the freedom to navigate tight spaces or complex choreography with absolute confidence.

Powered by TWiFi Technology

At the core of Pyro Ultra is Hollyland’s TWiFi (dual-band wireless) technology. It leverages intelligent frequency management across the 2.4 GHz and 5 GHz bands to enable automatic hopping, ensuring a stable, high-bitrate connection even in congested RF environments. Pyro Ultra’s robust link supports a 1.5 km (4,900 ft) range and is fully DFS-ready, providing professional crews with reliable, globally compliant operation

Engineered for Modern Workflows & Seamless Integration

Pyro Ultra is built for today’s hybrid production workflows. With UVC (USB Video Class) support, it can connect directly to a computer for instant webcam functionality, removing the need for a capture card. Its RTMP support enables direct streaming to web platforms, simplifying remote collaboration. As part of the Pyro ecosystem, Ultra integrates seamlessly with existing Pyro devices. The modular design allows production teams to scale their setups based on project requirements, ensuring consistent performance across different production scenarios.

Pricing and Availability

Launched on April 18, 2026, Hollyland’s Pyro Ultra is now available through local distributors, the official Hollyland online store, and the Hollyland Amazon store.

The 1TX/1RX kit is priced at $1,199, and the 1TX/2RX kit at $1,699. Individual units can also be purchased separately, with transmitters starting at $699 and receivers at $579.

For more information, visit https://www.hollyland.com/product/pyro-ultra

About Hollyland

Hollyland is a leading provider of wireless products, specializing in wireless intercom systems, video transmission systems, monitors, wireless microphones, and live streaming cameras. Since 2013, Hollyland has been serving millions of users around the world in various sectors, including filmmaking, telecasting, video production, live events, exhibitions, theaters, houses of worship, and individual content creators. It has built a sales network covering approximately 150 countries and regions with support from dozens of localized operation offices worldwide. For more information, please visit https://www.hollyland.com/, Hollyland Facebook, and Hollyland Instagram.

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Three Papers Published Consecutively in Nature Energy: JinkoSolar’s Breakthroughs in TOPCon/Perovskite Tandem Technology Receive Authoritative Recognition

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SHANGHAI, April 18, 2026 /PRNewswire/ — JinkoSolar, the global leading PV and ESS supplier, recently published three research papers in succession within a single month in Nature Energy, one of the premier journals in the field of energy research. This series of papers showcases JinkoSolar’s multiple major breakthroughs in TOPCon and perovskite tandem cell technologies.

26.66%! Setting a New Record for Industrial-Scale TOPCon Cell Conversion Efficiency

JinkoSolar, in collaboration with the research team from the Ningbo Institute of Materials Technology and Engineering of the Chinese Academy of Sciences, successfully developed a dual-sided electrical synergy optimization strategy. This approach achieved a certified efficiency of up to 26.66% on M10-sized silicon wafers, setting a new efficiency record for industrial-scale TOPCon cells and significantly narrowing the gap between industrial-scale TOPCon cells and the theoretical efficiency of 29.4%.

Additionally, the research reduced carrier transport losses through a high-resistance boron emitter on the front side and an optimized fine-line grid design, while the back side employs an innovative double-layer tunneling silicon oxide/polysilicon structure on the rear side to effectively suppress performance degradation caused by silver paste puncture. Furthermore, by utilizing localized polysilicon thinning technology, the research achieved outstanding performance metrics, including an open-circuit voltage of 744.6 mV, a fill factor of 85.57%, and a bifaciality of 88.3%. This achievement provides a feasible and comprehensive solution for narrowing the efficiency gap between TOPCon cells and the theoretical limit, significantly enhancing the core competitiveness of TOPCon technology in the future photovoltaic market.

Reference link: Dual-side electrical refinement enables efficient industrial tunnel oxide passivating contact silicon solar cells:
https://www.nature.com/articles/s41560-026-01982-2

Certified Efficiency of 32.73%! Paving the Way for Scalable Compatibility of Perovskite/TOPCon Tandem Cells

JinkoSolar, in collaboration with the research team from Soochow University, has successfully developed a full-size bifacial TOPCon crystalline silicon solar cell with a certified photoconversion efficiency of 26.34%. This research abandons the traditional TOPCon cell design featuring a boron-diffused emitter on the front surface. Instead, it innovatively introduces patterned n-type TOPCon finger contacts on the front surface while retaining the full-area p-type TOPCon contact on the back. By localizing the polycrystalline silicon contact area, this structure significantly reduces parasitic absorption and recombination losses on the front surface, achieving a certified efficiency of 26.34% and significantly improving the open-circuit voltage.

Furthermore, to address the issues of poor contact performance and susceptibility to metal paste corrosion in P-type TOPCon, a “polysilicon/silicon dioxide/polysilicon” double-layer composite structure was designed. Combined with optimized rear-side polishing and a specially formulated silver paste, this structure not only achieves extremely low contact resistance and recombination current but, more importantly, the ultra-thin oxide layer in the middle effectively prevents silver crystal spikes from penetrating the silicon substrate, significantly enhancing the device’s reliability and high-temperature resistance. In the future, by improving the precision of laser patterning to further narrow the finger width and introducing localized contacts on the back side to reduce the polycrystalline silicon layer thickness, parasitic absorption can be reduced, and mass production efficiency is expected to approach 27%.

Using a high-efficiency bifacial TOPCon cell with a textured front surface as the bottom cell, the research team fabricated a monolithic perovskite/TOPCon tandem cell, achieving a certified efficiency of 32.73% and a high open-circuit voltage of 1.961 V. These results not only set a new performance record for this class of tandem cells but also demonstrated excellent long-term operational stability (maintaining 80% of the initial efficiency after 2,000 hours), proving the immense potential of this TOPCon technology route in tandem applications. They also provide a scalable and industrially compatible technical pathway for the development of higher-efficiency TOPCon and perovskite/TOPCon tandem photovoltaic modules.

Reference link: Bifacial tunnel oxide passivating contacts for silicon and perovskitesilicon tandem solar cells with improved efficiency: 
https://www.nature.com/articles/s41560-026-02007-8

32.76%! Breaking Through the Efficiency Barrier for Industrial TOPCon Silicon-Based Perovskite Tandem Cells

To address the critical challenge of rapid perovskite crystallization and film quality degradation caused by the high thermal conductivity of industrial thin silicon substrates, JinkoSolar, in collaboration with the National University of Singapore and other research institutions, innovatively proposed a strategy to regulate the major organic cation (FA⁺) using a dual-mode-coupled ligand (MBT), successfully achieving effective control over crystallization kinetics. A perovskite/TOPCon tandem solar cell fabricated using this strategy was certified by the National Photovoltaic Industry Metrology and Testing Center (NPVM) with a conversion efficiency of 32.76%, approaching the current efficiency record for tandem photovoltaic cells. Additionally, the cell maintained 91% of its initial efficiency after 1,700 hours of continuous operation, demonstrating excellent long-term operational reliability.

This research is of significant importance as it achieves high efficiency (certified at 32.76%) in TOPCon silicon-back-contact cells, which hold the greatest potential for market dominance. Not only does it elevate the efficiency of perovskite/TOPCon tandem cells to new heights, but more importantly, it provides critical scientific insights and a practical pathway for integrating high-performance perovskite materials from the laboratory with market-dominant TOPCon silicon technology, marking a solid step toward the mainstream industrialization of perovskite/ crystalline silicon tandem technology toward mainstream industrialization. In the future, this strategy is expected to be combined with solution-based production processes — which offer the potential for large-scale fabrication and low costs — to drive the industrial application of these research findings.

Reference link: Additive-assisted perovskite crystallization on industrial TOPCon silicon for tandem solar cells with improved efficiency: 
https://www.nature.com/articles/s41560-026-02010-z

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SOURCE JinkoSolar

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