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Tan Hairen's team AM: 26% stable efficiency! Latest research achievements in fully perovskite stacked solar cells
Date: 2022-04-24Read: 36
Congratulations to Professor Tan Hairen of Nanjing University for publishing an article titled 'Advanced Materials' in the international academic journalSpace engineering provides efficient and optically stable wide bandgap perovskite for all perovskite stacked solar cellsThe latest research findings. Among them, our company acts as an agentJapanese SAN-EI model XH-50S1 dual lamp hyperspectral matching solar simulatorEffective test results were provided during the research process.
Research Background
Wide bandgap (~1.8 eV) perovskite is a key component paired with narrow bandgap perovskite in low-cost monolithic perovskite stacked solar cells. However, the stability and efficiency of wide bandgap perovskite solar cells are limited by photo induced halide segregation and insufficient photovoltage.
main content
In this article, the team led by Tan Hairen from Nanjing University proposed a space engineering approach to obtain high-quality, optically stable wide bandgap perovskites (~1.8 eV) suitable for all perovskite stacks. By alloying dimethylammonium and chloride into mixed cation mixed halide perovskite, a wide bandgap perovskite with low bromide content and minimized lattice strain and trap density can be obtained. At this point, the wide bandgap perovskite solar cell exhibits significantly improved performance and photostability, maintaining an initial efficiency of>90% even after 1000 hours of operation at the maximum power point. The team led by Tan Hairen from Nanjing University prepared tri cation/trihalide wide bandgap perovskite through space engineering, and further achieved a stable 26.0% photoelectric conversion efficiency in all perovskite stacked solar cells, providing a pathway for the preparation of efficient and stable wide bandgap sub cells for multi junction photovoltaic devices.
Measurement examples
For stacked solar cells,Characterization of J-V and other optoelectronic characteristics under the illumination of a dual lamp hyperspectral matching solar simulator (SAN-EI ELECTRIC, XH-50S1).The spectrum of the solar simulator has been fine tuned to ensure that it is within the wavelength range of 400~1000 nm, with interval integration at intervals of every 50 nm, and the spectrum adaptation is within ± 3%. The illumination intensity of the solar simulator is set to 100mW cm-2At the same time, use a calibrated crystalline silicon-based standard solar cell (KG-0) with a quartz window for verification.
文献信息： Steric engineering enables efficient and photostable wide-bandgap perovskites for all-perovskite tandem solar cells
Jin Wen, Yicheng Zhao, Zhou Liu, Han Gao, Renxing Lin, Sushu Wan, Chenglong Ji, Ke Xiao, Yuan Gao, Yuxi Tian, Jin Xie, Christoph J. Brabec and Hairen Tan*