材料科学
钙钛矿(结构)
纳米晶
图层(电子)
化学工程
能量转换效率
光电子学
纳米技术
工程类
作者
Jiayan Liu,Nana Liu,Gu Li,Yuqi Wang,Zhen Wang,Zhen Zhang,Dongdong Xu,Yue Jiang,Xingsen Gao,Xubing Lu,Shien‐Ping Feng,Guofu Zhou,Jun‐Ming Liu,Jinwei Gao
标识
DOI:10.1021/acsami.2c19193
摘要
The poor interfacial contact and imperfections between the charge transport layer and perovskite film often result in carrier recombination, inefficient charge collection, and inferior stability of perovskite solar cells (PSCs). Therefore, interface engineering is quite crucial to achieve high-performance and stable PSCs. Here, we introduced a cinnamate-functionalized cellulose nanocrystals (Cin-CNCs) interfacial layer between SnO2 and perovskite active layer for enhancing carrier transport ability and crystal growth of perovskite, meanwhile endowing additional functional of long-term device stability against ultraviolet light. The enhancement of interfacial contact between SnO2 and perovskite layer and cascade energy alignment are realized, which is beneficial for obtaining the desirable perovskite film morphology, passivating the interfacial defects, and restraining charge recombination in the SnO2/perovskite interface. An efficiency as high as 23.18%, with an open-circuit voltage of 1.15 V and a significantly enhanced fill factor of 81.07%, is achieved. In addition, the unencapsulated PSCs maintain 75% of the initial PCE after aging for over 1500 h under 25 °C and 30% relative humidity, with better light-soaking stability. These results exhibit the vital role for Cin-CNCs in interfacial modification and constructing high-performance perovskite solar cells.
科研通智能强力驱动
Strongly Powered by AbleSci AI