Preparation of hysteresis-free flexible perovskite solar cells via interfacial modification

Jianjun Zhang ¹Xiaofang Ye ²Hongkun Cai ¹Jian Su ³Jingtao Yang ³Jian Ni ¹Juan Li¹

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作者信息

1. Department of Electronic Science and Technology,College of Electronic Information and Optical Engineering,Nankai University,Tianjin,300350,China;Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin,Tianjin,300350,China
2. Department of Electronic Science and Technology,College of Electronic Information and Optical Engineering, Nankai University, Tianjin, 300350,China
3. Department of Electronic Science and Technology,College of Electronic Information and Optical Engineering,Nankai University,Tianjin,300350,China
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Abstract

In recent years,flexible perovskite solar cells have received extensive attention and rapid development due to their advantages of lightweight,portability,wearability and applications in near-space.However,due to the limitations of their preparation process and other factors,high-efficiency and large-area flexi-ble perovskite solar cells still have a lot of room for development.In our work,a flexible perovskite solar cell(PEN/ITO/SnO2/KCl/Cs0.05(MA0.17FA0.83)0.95Pb(I0.83Br0.17)3/spiro/Au)was prepared using a low tem-perature(no higher than 100℃)solution process,and the device with the highest efficiency of 16.16％ was obtained by adjusting the concentration of the KCl modified layer.Meanwhile,the efficiency of the large area(1 cm2)flexible solar cell was higher than 13％.At the same time,the passivation of the KCl interface modification layer inhibits the formation of the defect states,which reduced the surface recom-bination of the perovskite and improved the carrier transport performance,and the hysteresis effect of the device was also reduced accordingly.

Key words

Flexible solar cells/Perovskite/KCl/NaCl/Interfacial modification

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基金项目

出版年

2021

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI

影响因子：0.657

ISSN：1005-0302

参考文献量33

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