31.27%! Recently, Guangyin Technology has achieved another milestone in the field of all-perovskite tandem solar cells, setting a new world record for solar energy conversion efficiency. The company reported that its all-perovskite tandem solar cell reached an impressive 31.27% efficiency, certified by the National Photovoltaic Quality Inspection Center. This achievement surpasses the previous record of 30.58% set by Guangyin Technology in February 2025, reinforcing its leadership in the all-perovskite tandem technology sector.
This result not only exceeds the theoretical limit for crystalline silicon cells of 29.43% but also signifies the entry of all-perovskite tandem technology into a new era of high efficiency, opening up new avenues for the industry.
The improvement of nearly 2 percentage points in less than a year is part of a continuous trend. Over the last three years, Guangyin Technology has consistently broken world records for perovskite photovoltaic cells, including three records for all-perovskite tandem cell efficiency. Beginning with a record-breaking efficiency of 29.34% in May 2024, the company has now achieved 31.27% in just under a year, demonstrating a pace of advancement that far exceeds the industry average.
This rapid technological evolution is driven by Guangyin Technology’s dual-track R&D strategy, which focuses on maximizing the performance of single-junction cells to provide a solid foundation for the development of all-perovskite tandem cells. The breakthroughs in all-perovskite tandem technology are fundamentally linked to the maturity of single-junction technology.
Guangyin Technology has established a comprehensive technical framework in the realm of single-junction cells. Through ongoing investment in R&D and innovation, the company has achieved significant advancements in both the efficiency and stability of perovskite single-junction cells. In the area of all-perovskite tandem technology, Guangyin Technology has addressed complex material formulation optimization challenges. By refining material compositions, enhancing device structures, and improving fabrication processes, the company has successfully overcome numerous technical obstacles, leading to substantial increases in tandem cell efficiency and three world record achievements.
It is important to note that while the potential for all-perovskite tandem cells is immense, commercialization is still a considerable challenge. Compared to single-junction cells, all-perovskite tandem cells require precise control of the properties of two layers of perovskite, which involves complex material formulation optimizations. This also raises higher demands for material stability and fabrication processes.
As commercialization of all-perovskite tandem cells is still in its infancy, Guangyin Technology is focusing on high-level laboratory reserves for this technology. The company believes that excelling in the commercialization of perovskite single-junction cells is crucial for successfully achieving the industrialization and commercialization of perovskite tandem cells.
The ultimate goal of breakthroughs in “hard technology” and practical applications in “true mass production” is to realize industrial transformation. Guangyin Technology has demonstrated remarkable speed and efficiency in this regard. On March 20, 2025, Guangyin Technology successfully completed the production line for 200MW of perovskite photovoltaic cells in Xuzhou High-tech Zone, with the first batch of 1.2m x 0.6m panels rolling off the line. The entire process took just 29 days from core equipment installation on February 20, 2025, and less than four months from the start of construction on November 27, 2024, setting a new industry record.
With the new benchmark of 31.27% efficiency, Guangyin Technology is accelerating its industrialization strategy. The next steps include initiating planning for gigawatt-level production lines to facilitate the transition from megawatt to gigawatt production capacity. The company aims to collaborate with partners to explore applications in photovoltaic consumer electronics, BIPV, distributed power plants, and more, striving not only to create efficiency records but also to bring innovative technologies out of the lab and into everyday life, benefiting countless households.
The founding team of Guangyin Technology has adhered to the principle of “starting with the end of the industry in mind,” focusing on achieving the ultimate goal of perovskite commercialization and industrialization. This approach ensures that Guangyin does not become merely a “technology workshop” with numerous papers and patents but is committed to transforming cutting-edge perovskite technology into market-competitive products. While pursuing technological advancement, it remains market-oriented with the goal of producing competitive perovskite photovoltaic products.
Guangyin Technology aspires to emulate great companies like Huawei and BYD, hoping to bring perovskite photovoltaic products to households everywhere, making clean energy more accessible and widespread, and contributing positively to global energy transformation and climate change efforts.
As of now, Guangyin Technology has broken the world record for perovskite cell efficiency 14 times consecutively, topping the Solar Cell Efficiency Tables published by Martin Green in editions 64 and 65. The company has also been recognized in the NREL’s Champion Module Efficiencies Chart for achieving the highest efficiency in four core technical indicators, whether in 1cm² single-cell or 1200cm² large modules; whether for single-junction efficiency or all-perovskite tandem efficiency; in terms of both efficiency and stability, Guangyin Technology (SolaEon) remains the current record holder.
1cm² Perovskite Single-Junction Cell Efficiency World Record:
- In January 2025, Guangyin Technology developed a perovskite unit cell (1 cm²) with a solar energy conversion efficiency of 26.50%, setting a new world record (National Photovoltaic Industry Metrology Testing Center).
- In December 2024, the efficiency of the perovskite unit cell (1 cm²) was raised to 26.34%, again breaking the world record for single-junction perovskite solar cells (National Photovoltaic Industry Metrology Testing Center).
- In November 2024, the efficiency was further improved to 26.14% and 26.20%, marking the first time a single cell has surpassed 26% globally, once more breaking the efficiency world record (National Photovoltaic Industry Metrology Testing Center).
- In April 2024, a third-party certified efficiency of 25.64% was achieved for the perovskite unit cell (1 cm²), which was the highest efficiency for that time (National Photovoltaic Industry Metrology Testing Center).
1200cm² Perovskite Module Steady-State Efficiency World Record:
- In December 2024, the steady-state efficiency of Guangyin Technology’s 30cm x 40cm large-size perovskite solar cell module reached 21.1%, achieving two world record tops in a year in the NREL Champion Module Efficiencies Chart.
- In November 2024, the stability efficiency of the 30cm x 40cm perovskite solar cell module topped the Solar Cell Efficiency Tables published by Professor Martin Green (Edition 65).
- In July 2024, Guangyin Technology’s 30cm x 40cm perovskite solar cell module achieved the highest steady-state efficiency on the Solar Cell Efficiency Tables (Edition 64).
- In April 2024, the 1200cm² perovskite photovoltaic module was listed as the highest steady-state efficiency and the largest area module in the world according to the NREL Champion Module Efficiencies Chart.
- In January 2024, Guangyin Technology’s 30cm x 40cm perovskite module achieved a 21.95% efficiency during steady-state MPPT testing, with zero degradation, breaking its own steady-state efficiency record.
- In December 2023, the 30cm x 40cm perovskite module tested at the NREL achieved 19.2% efficiency at steady-state MPPT testing, with zero degradation, and was recognized by NREL as the latest world record for high-efficiency and high-stability perovskite modules, also topping the NREL Champion Module Efficiencies Chart.
1200cm² Perovskite Module IV Testing Efficiency World Record:
- In January 2024, Guangyin Technology further increased the efficiency of the 30cm x 40cm perovskite module to 22.57%. The company also achieved the industry’s lowest hysteresis effect index of just 0.15% during testing of the 1200cm² perovskite cell at the National Photovoltaic Industry Metrology Testing Center, significantly improving the accuracy of perovskite cell testing.
- In December 2023, the efficiency was raised to 22.07%.
- In October 2023, the 1200cm² perovskite single-junction solar cell module achieved a third-party certified efficiency of 21.63%, breaking the world record.
All-Perovskite Tandem Solar Cell Efficiency World Record:
- In March 2025, Guangyin Technology’s all-perovskite tandem solar cell achieved a solar energy conversion efficiency of 31.27%, maintaining its global lead.
- In February 2025, the efficiency was improved to 30.58%, with a steady-state efficiency of 30.49% for all-perovskite tandem solar cells, breaking the world record.
- In May 2024, the efficiency reached 29.34%, setting another world record.
- In March 2024, the efficiency was recorded at 29.07%, placing it in the top three globally.
