光伏系统
钙钛矿(结构)
材料科学
氧化镍
结晶度
能量转换效率
光电子学
氧化物
纳米技术
化学工程
复合材料
工程类
冶金
电气工程
作者
Yue Wu,Mengyuan Wei,Yuxuan Sun,Xiao Yang,Wei Xun,Mingguang Li,Runfeng Chen,Yi Lin,Ping Li,Qingsong Jiang
出处
期刊:Vacuum
[Elsevier BV]
日期:2024-02-15
卷期号:222: 113057-113057
被引量:11
标识
DOI:10.1016/j.vacuum.2024.113057
摘要
Nickel oxide (NiOx) is considered to be an attractive hole transport material in planar inverted perovskite solar cells (PSCs). Unfortunately, the further development of NiOx-based PSCs is severely restrained due to the poor interface quality between NiOx and perovskite layers. In this paper, a buried interface modification strategy using a polar molecule material 4,4-difluorocyclohexylamine hydrochloride (simplified as DFCHY) is introduced to improve the performance of NiOx-based PSCs. Theoretical analysis and experimental results demonstrate that DFCHY plays a role in bridging the NiOx/perovskite interface, not only suppressing the high oxidation state of Ni3+ and enhancing the conductivity in NiOx film, but also passivating buried interface of perovskite film and improving its crystallinity, further effectively reducing trap density and enhancing charge transfer at the interface of NiOx/perovskite layers. The champion inverted PSCs using DFCHY as a buried interface modifier achieve a power conversion efficiency of 17.08% with negligible hysteresis. Furthermore, the unencapsulated PSCs with DFCHY modification exhibit outstanding long-term stability, maintaining above 90% of their initial efficiency after 1000 h storage in a nitrogen-filled glovebox.
科研通智能强力驱动
Strongly Powered by AbleSci AI