https://scholars.lib.ntu.edu.tw/handle/123456789/598803
標題: | Improved efficiency and air stability of two-dimensional p-i-n inverted perovskite solar cells by Cs doping | 作者: | Hsieh, Tzu-Chien Shih, Chung-Yueh Chao, Yu-Chiang I-CHUN CHENG JIAN-ZHANG CHEN |
關鍵字: | Cesium;Conversion efficiency;Crystallinity;Efficiency;Perovskite;Scanning electron microscopy;Semiconductor doping;Absorbing layers;Air stability;Doping concentration;Perovskite films;Power conversion efficiencies;Threedimensional (3-d);Perovskite solar cells | 公開日期: | 2021 | 卷: | 11 | 期: | 33 | 起(迄)頁: | 20200-20206 | 來源出版物: | RSC Advances | 摘要: | Two-dimensional perovskite solar cells (2-D PSCs) have attracted much research attention in recent years because they are more stable in a regular environment than three-dimensional (3-D) ones are. In this study, we doped Cs into 2D perovskite (BA2(MA)2Pb3I10) films as the absorbing layers of the 2-D p-i-n inverted PSCs to investigate the influence of the Cs doping concentration on the properties of the 2-D perovskite films and the fabricated solar cells. Cs doping clearly improves the power conversion efficiency (PCE) and air stability of the PSCs. Doping perovskite with 10% Cs (the best doping concentration in this study) can increase the PSC efficiency from 7.98% to 10.11%. Scanning electron microscopy indicates the improved surface quality and crystallinity by Cs doping. However, excess Cs doping degrades the PCE of the PSCs. Furthermore, 10% Cs doped PSCs show air stability superior to that of undoped ones in unpackaged humidity environments. After exposure to 55% relative humidity (RH) in 19 °C air for 300 h, the PCE of the PSC decreased by only 39%, in contrast to 84% for the undoped PSC. ? The Royal Society of Chemistry 2021. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85108347969&doi=10.1039%2fd1ra02574k&partnerID=40&md5=c8409cfabb72404d7dfdf4271b05f45c https://scholars.lib.ntu.edu.tw/handle/123456789/598803 |
ISSN: | 20462069 | DOI: | 10.1039/d1ra02574k |
顯示於: | 應用力學研究所 |
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