Frontiers of Optoelectronics, Volume. 13, Issue 3, 265(2020)
Polymer hole-transport material improving thermal stability of inorganic perovskite solar cells
Cesium-based inorganic perovskite solar cells (PSCs) are paid more attention because of their potential thermal stability. However, prevalent salt-doped 2,2′,7,7′- tetrakis(N,N-dipmethoxyphenylamine)9,9′-spirobifluorene (Spiro-OMeTAD) as hole-transport materials (HTMs) for a high-efficiency inorganic device has an unfortunate defective thermal stability. In this study, we apply poly (3-hexylthiophene-2,5-diyl) (P3HT) as the HTM and design all-inorganic PSCs with an indium tin oxide (ITO)/SnO2/LiF/CsPbI3-xBrx/P3HT/Au structure. As a result, the CsPbI3-xBrx PSCs achieve an excellent performance of 15.84%. The P3HT HTM-based device exhibits good photo-stability, maintaining ~80% of their initial power conversion efficiency over 280 h under one Sun irradiation. In addition, they also show better thermal stability compared with the traditional HTM Spiro- OMeTAD.
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Shaiqiang MU, Qiufeng YE, Xingwang ZHANG, Shihua HUANG, Jingbi YOU. Polymer hole-transport material improving thermal stability of inorganic perovskite solar cells[J]. Frontiers of Optoelectronics, 2020, 13(3): 265
Category: RESEARCH ARTICLE
Received: Apr. 22, 2020
Accepted: May. 9, 2020
Published Online: Nov. 25, 2020
The Author Email: HUANG Shihua (huangshihua@zjnu.cn)