材料科学
钙钛矿(结构)
量子点
成核
能量转换效率
黑磷
光电子学
钙钛矿太阳能电池
活动层
带隙
化学工程
图层(电子)
纳米技术
有机化学
化学
工程类
薄膜晶体管
作者
Yuhong Zhang,Lin Xu,Yanjie Wu,Qingqing Zhou,Zhichong Shi,Xinmeng Zhuang,Bin Liu,Biao Dong,Xue Bai,Wen Xu,Donglei Zhou
出处
期刊:Nano Energy
[Elsevier]
日期:2021-12-01
卷期号:90: 106610-106610
被引量:37
标识
DOI:10.1016/j.nanoen.2021.106610
摘要
Additive engineering is one of the most effective techniques for optimizing the performance of perovskite solar cells (PSCs). However, the previous research mainly focused on adopting this strategy to a single layer of the PSCs. In this work, a double-layer synergistic optimization approach is employed by simultaneously introducing functional black phosphorus quantum dots (BPQDs) into the electron transport layer (ETL) and perovskite layer. The BPQDs with superior conductivity is doped into SnO2 ETL to effectively fill the electron traps and enhance electron mobility of SnO2. Meanwhile, the 3-aminopropyltriethoxysilane-modified BPQDs ([email protected]) is introduced into the perovskite bulk to moderately tailor its intrinsic characteristics, and this synchronously facilitates the perovskite nucleation and growth, passivates defects and improves moisture-resistance of perovskite film. Taking advantage of the synergistic effects, efficient PSCs with power conversion efficiency of 22.85% with ultrahigh open-circuit voltage (VOC) of 1.22 V is demonstrated, this VOC value ranks in the highest values of perovskite film with a bandgap of ~ 1.60 eV. Additionally, the non-encapsulated BPQDs modified PSCs show better long time and humidity stability.
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