期刊
NANOSCALE
卷 9, 期 37, 页码 13967-13975出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7nr03507a
关键词
-
类别
资金
- National Natural Science Foundation of China [51672111]
- 973 program early projects [2014CB260405]
- Advanced Talents Program of Hebei Province [GCC2014013]
- Top Young Outstanding Innovative Talents Program of Hebei Province [BJ2014009]
- Natural Science Foundation of Hebei Province [F2015201189]
- 100 Talents Program of Hebei Province
The development of hybrid tin (Sn)-lead (Pb) perovskite solar cells likely tackles the toxic problem with the power conversion efficiency (PCE) exceeding 17%. However, the stability problems, e.g. hysteresis effect, degeneration and oxidation, appear to be the bottleneck that limit its further development. Here, we innovatively introduced C-60 at the grain boundaries throughout the CH3NH3Pb0.75Sn0.25I3 (MAPb(0.75)Sn(0.25)I(3)) thin film, playing a role not only in in situ passivating the interfaces and reducing the pinholes of perovskite thin films, but also in preventing the penetration of moisture and oxygen from ambient atmosphere. Electrochemical impedance spectroscopy (EIS) illustrated that the recombination lifetime of both the bulk and surface of MAPb(0.75)Sn(0.25)I(3) thin films was increased by additive incorporation of C-60. Dark I-V results for the electron/hole-only devices showed that the charge trap-state density decreased with C-60 additive incorporated into the hybrid Sn-Pb perovskite thin films. Importantly, the hybrid Sn-Pb perovskite solar cells modified with C-60 additive were demonstrated to have superior stability and efficiency when exposed to the ambient environment without encapsulation.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据