Improving the efficiency of inverted mixed-organic-cation perovskite absorber based photovoltaics by tailing the surface roughness of PEDOT: PSS thin film

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题名:	Improving the efficiency of inverted mixed-organic-cation perovskite absorber based photovoltaics by tailing the surface roughness of PEDOT: PSS thin film
作者:	張勝雄;Chen, Cheng-Chiang;Chang, Sheng Hsiung;Chen, Lung-Chien;Kao, Feng-Sheng;Cheng, Hsin-Ming;Yeh, Shih-Chieh;Chen, Chin-Ti;Wu, Wen-Ti;Tseng, Zong-Liang;Chuang, Chuan Lung;Wu, Chun-Guey
贡献者:	理學院光電科學與工程學系
关键词:	Experiments;Luminescence;Mixed-organic-cation perovskite absorbers;Nanosecond time-resolved photoluminescence;PEDOT:PSS thin films;Perovskite;Photovoltaic cells;Photovoltaics;Scanning electron microscopy;Solar energy;Thin films;Toluene
日期:	2016-09-01
上传时间:	2026-04-23 11:33:29 (UTC+8)
出版者:	Elsevier Ltd.;New York: Elsevier Ltd
摘要:	摘要： •Mixed-organic-cation perovskite absorbers were fabricated by solution process.•The properties of mixed-organic-cation perovskite absorbers were characterized.•The surface roughness of the PEDOT:PSS thin film influences the JSC.•The PCE was improved from 12.2% to 13.3% by tailing the surface roughness of the PEDOT:PSS thin film. A phase-pure mixed-organic-cation perovskite absorber (MOC-PA) was fabricated by a one-step spin-coating process with a toluene washing treatment, and the structural, optical and excitonic properties of the resultant MOC-PAs were then characterized by scanning electron microscopy, X-ray diffractometry, absorbance spectrometer, and time-resolved photoluminescence. The averaged power conversion efficiency (PCE) of inverted phase-pure MOC-PA based photovoltaics could be improved from 12.21% to 13.28% by tailing the surface roughness of the poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) thin film from 1.43nm to 1.84nm. The improved PCE is mainly due to the increased short-circuit current density (JSC) which is attributed to the improvement of the exciton dissociation, as confirmed by photoluminescence experiments. In addition, the experimental results indicate that the PCE can be further improved by increasing the crystallinity of MOC-PAs. 出版者： New York: Elsevier Ltd 出版日期： 2016-09-01 出處： Solar Energy, 2016-09, Vol.134, p.445-451 版權： 2016 Elsevier Ltd 版權： Copyright Pergamon Press Inc. Sep 2016 識別號： ISSN: 0038-092X 識別號： EISSN: 1471-1257 識別號： DOI: 10.1016/j.solener.2016.05.032 識別號： CODEN: SRENA4
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