ADDITIVE IMPROVES PERFORMANCE OF WIDE BANDGAP PEROVSKITE SOLAR CELLS

Li Zhuoxin; Feng Xuzheng; Chen Xianggang; Liu Xuepeng; Dai Songyuan; Cai Molang

doi:10.19912/j.0254-0096.tynxb.2023-1386

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Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (4) : 30-35. DOI: 10.19912/j.0254-0096.tynxb.2023-1386

ADDITIVE IMPROVES PERFORMANCE OF WIDE BANDGAP PEROVSKITE SOLAR CELLS

Li Zhuoxin, Feng Xuzheng, Chen Xianggang, Liu Xuepeng, Dai Songyuan, Cai Molang

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Abstract

The effects of polysodium p-styrene sulfonate（PSS） on wide-bandgap perovskite films and devices are studied in this paper. The research of this paper shows that use of a polypodium PSS passivator can effectively improve the morphology, increase the crystallinity, and reduce the defect density of perovskite films, which are beneficial to inhibit the phase segregation of mixed-halide wide-bandgap perovskite films. Finally, the J-V test results show that the performance of the optimized wide-bandgap perovskite solar cell is significantly improved. In the wide bandgap perovskite solar cell with PSS, the open circuit voltage is up to 1.23 V, and the efficiency is up to 20.54%. Moreover, the stability of the encapsulated device is significantly improved after phase segregation being inhibited, and the efficiency remains 81.9% of the initial efficiency under continuous illumination for 500 h （N₂ environment, 40 ℃）.

Key words

perovskite solar cells / wide-band gap / crystallinity / defect passivation / phase segregation / performance

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Li Zhuoxin, Feng Xuzheng, Chen Xianggang, Liu Xuepeng, Dai Songyuan, Cai Molang. ADDITIVE IMPROVES PERFORMANCE OF WIDE BANDGAP PEROVSKITE SOLAR CELLS[J]. Acta Energiae Solaris Sinica. 2024, 45(4): 30-35 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1386

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