钙钛矿(结构)
氧化镍
图层(电子)
制作
电流密度
乙烯醇
材料科学
能量转换效率
化学工程
短路
镍
开路电压
光电子学
纳米技术
复合材料
电压
工程类
冶金
电气工程
聚合物
替代医学
病理
物理
医学
量子力学
作者
Yuhang Xu,Ze Liu,Ling Zhang,Weijie Qi,Qiaoli Niu,Wan‐Yi Tan,Wenjin Zeng,Ruidong Xia,Yonggang Min
标识
DOI:10.1016/j.synthmet.2021.116986
摘要
Nickel oxide (NiOx) has been widely used as a hole transport layer (HTL) of p-i-n type perovskite solar cells (PSCs) because of its many unique properties. However, the poor contact between NiOx and perovskite is disadvantage to the fabrication of high-quality perovskite film, which has bad effect on the open-circuit voltage (VOC), short-circuit current density (JSC) and fill factor (FF) of PSCs. In this report, poly(vinyl alcohol) (PVA) was used as a modifier on the surface of NiOx. Experimental results showed that after PVA modification the PCE of PSCs increased significantly from 16.79% to 19.17% due to the increase of JSC and FF. The MAPbI3 film on top of the PVA modified NiOx showed larger crystal size, less defect intensity and higher hole mobility. The work mechanism of PVA modification was investigated. This work provides an effective and simple method to improve the performance of PSCs.
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