Japanese Researchers Set World Record with 12.28% Efficient Indium-Free Solar Cell

Published: Mar 13, 2026 17:28

Save

The National Institute of Advanced Industrial Science and Technology (AIST) in Japan recently announced the successful development of a copper gallium selenide (CuGaSe₂) solar cell with a conversion efficiency of 12.28%, setting a world record for indium-free wide-bandgap chalcogenide solar cells in the same frequency band.

The research team enhanced the open-circuit voltage and cell performance by incorporating aluminum to form a back-surface field and optimizing the buffer layer. This achievement provides a new approach for the development of high-efficiency tandem solar cells.

Data Source Statement: Except for publicly available information, all other data are processed by SMM based on publicly available information, market communication, and relying on SMM‘s internal database model. They are for reference only and do not constitute decision-making recommendations.

For any inquiries or to learn more information, please contact: lemonzhao@smm.cn

For more information on how to access our research reports, please contact:service.en@smm.cn

Related News

4 hours ago

Vale Maintained Strong Production and Sales Momentum in Q1

4 hours ago

5 hours ago

Major Countries and Regions for Copper Foil Imports and Exports in March 2026

[Copper Foil Customs Data] According to data from the General Administration of Customs, in March 2026, the top three sources of China's copper foil imports were Taiwan, China (4,979.31 mt), Malaysia (1,197.24 mt), and Luxembourg (644.67 mt). The top three destinations for China's copper foil exports were Thailand (1,839.95 mt), South Korea (950.43 mt), and Malaysia (674.27 mt).

5 hours ago

China Copper Foil Import and Export Data by Trade Mode

[Copper Foil Customs Data] According to data from the General Administration of Customs, in March 2026, China's copper foil imports by trade mode were as follows: Ordinary Trade (5,755.06 mt), processing trade with supplied materials (400.21 mt), processing trade with imported materials (875.7 mt), and other trade modes (1,189.07 mt). China's copper foil exports by trade mode in March 2026 were as follows: Ordinary Trade (1,580.67 mt), processing trade with supplied materials (1,694.17 mt), processing trade with imported materials (2,762.66 mt), and other trade modes (625.98 mt).

5 hours ago