材料科学
氧化镍
热稳定性
能量转换效率
光伏系统
钙钛矿(结构)
化学工程
氧化物
纳米晶材料
纳米技术
非阻塞I/O
光电子学
化学
催化作用
冶金
有机化学
生物
工程类
生态学
作者
Weitao Chen,Shasha Zhang,Zhenghao Liu,Shaohang Wu,Rui Chen,Ming Pan,Zhichun Yang,Hongmei Zhu,Sanwan Liu,Jiang Tang,Jiangyu Li,Wei Chen
出处
期刊:Solar RRL
[Wiley]
日期:2019-09-30
卷期号:3 (11)
被引量:30
标识
DOI:10.1002/solr.201900346
摘要
Cesium‐based inorganic perovskite solar cells (PSCs) have attracted great attention due to the superior thermal stability of the light absorbers. However, the reported devices normally contain organic charge‐transporting layers (CTLs), such as spiro‐OMeTAD, which is expensive and highly sensitive to ambient atmosphere and temperature. It is of great significance to develop inorganic CTLs with low cost and robust stability. To date, it is still a big challenge to achieve high‐quality inorganic CTL films via the solution process, especially for the hole‐transporting layer (HTL) in conventional n‐i‐p structures. Herein, tailored NiO nanocrystalline films as HTLs in an all‐layer‐inorganic CsPbI 2 Br‐based PSCs are developed, which exhibit uniform, pinhole‐free morphologies and efficient charge‐extraction capabilities. Consequently, the as‐constructed all‐layer‐inorganic PSCs, with an optimal power conversion efficiency (PCE) of 15.14% and a stabilized power output of 14.82%, present robust long‐term thermal stability: retained 85% of their initial PCEs after a thermal treatment at 85 °C in the dark in a nitrogen atmosphere with encapsulation for 1000 h, greatly surpassing the performance of the PSCs based on the organic HTLs.
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