期刊
CHINESE JOURNAL OF CHEMISTRY
卷 37, 期 12, 页码 1239-1244出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cjoc.201900317
关键词
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资金
- National Natural Science Foundation of China [51620105006, 61721005, 51973184]
- Zhejiang Province Science and Technology Plan [2018C01047]
- International Science and Technology Cooperation Program of China (ISTCP) [2016YFE0102900]
- Key Research Project of Southern Xinjiang [2019DB013]
The Summary of main observation and conclusion The small organic molecular Dioctylbenzothienobenzothiophene (C-8-BTBT) has been explored as hole transport material (HTM) to replace PEDOT:PSS in inverted perovskite solar cells (PVSCs). MAPbI(3) perovskite films depositd onto C-8-BTBT are smooth and uniform, with negligible residual of PbI2 and large grain size even larger than 1 mu m. Our champion C-8-BTBT based devices reached a high power conversion efficiency (PCE) of 15.46% with marginal hysteresis, much higher than that of 11.50% achieved using PEDOT:PSS. Besides, devices adopting C-8-BTBT as substrate show superior stability compared with the PEDOT:PSS based devices when stored under ambient conditions with a relative humidity of (25 +/- 5)%.
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