期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 47, 页码 41354-41362出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b14926
关键词
sodium doping; inorganic CuI; reduced hysteresis; perovskite; long-term stability; high efficiency
资金
- National Natural Science Foundation of China [51572098, 51272080]
- Fund for Strategy Emerging Industries of Shenzhen [JCY20150630155150208]
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology [2016-KF-5]
- Huazhong University of Science and Technology Innovation Research College
For a typical perovskite solar cell (PKSC), both the electron transport layers (ETLs) and hole transport materials (HTMs) play a very important role in improving the device performance and long-term stability. In this paper, we firstly improve the electron transport properties by modification of TiO2 ETLs with Na species, and an enhanced power conversion efficiency (PCE) of 16.91% has been obtained with less hysteresis. Subsequently, an inorganic Cul film prepared by a facile spray deposition method has been a) employed to replace the conventional spiro-OMeTAD as the HTM in PKSCs. Because of the improved transport properties at the ETL/perovskite and perovskite/HTM interfaces, a maximum photovoltaic efficiency of 17.6% with reduced hysteresis has been achieved in the PKSC with both the Na-modified TiO2 ETL and 60 nm-thick CuI layer HTM. To our knowledge, the PCE achieved in this paper is one of the highest values ever reported for the PKSC devices with inorganic HTMs. More significantly, the PKSCs exhibit an outstanding device stability, their PCE remains constant after storage in the dark for 50 days, and they can retain approximately 92% of their initial efficiency after storage even for 90 days.
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