钙钛矿(结构)
材料科学
串联
热稳定性
带隙
铯
图层(电子)
能量转换效率
光电子学
开路电压
化学工程
纳米技术
电压
化学
无机化学
复合材料
电气工程
工程类
作者
Xiao Wu,Jianquan Zhang,Minchao Qin,Kuan Liu,Ziyu Lv,Zhaotong Qin,Xinlu Guo,Yuhao Li,Jianbin Xu,Gang Li,He Yan,Xinhui Lu
出处
期刊:EcoMat
[Wiley]
日期:2022-02-25
卷期号:4 (4)
被引量:23
摘要
Abstract Cesium lead based all‐inorganic perovskite solar cells (PSCs) are promising candidates for tandem solar cells owing to their favorable thermal stability and suitable bandgap. However, to exploit the advantage to the full, there is still huge room to reduce energy loss and enhance the V OC . In this work, we developed low‐temperature processed ZnO as an ETL alternative. Incorporation of PbX 2 (X = I − , Cl − , and CH 3 COO − ) was found to increase oxygen vacancies in ZnO, which not only promoted the growth of all‐inorganic perovskite layer with improved morphology and orientational order, but also formed a favorable energy level alignment with the perovskite layer, thus facilitating charge extraction and suppressing charge recombination. Consequently, the CsPb(I 1− x Br x ) 3 PSCs based on PbX 2 :ZnO exhibited enhanced stability and performance. The efficiency was boosted from 17.64% to 20.04% with an improved fill factor of 84.14% and a V OC of 1.28 V, being the highest V OC among highly efficient (>20%) all‐inorganic PSCs to date.
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