Poly(vinylpyrrolidone)-doped SnO2 as an electron transport layer for perovskite solar cells with improved performance
Wang, Di1,2,3; Chen, Shan-Ci1,2; Zheng, Qingdong1,2
2019-10-21
发表期刊JOURNAL OF MATERIALS CHEMISTRY C
ISSN2050-7526
卷号7期号:39页码:12204-12210
发表状态已发表
DOI10.1039/c9tc04269e
摘要

Thin film tin oxide (SnO2) is a good electron transport layer (ETL) for perovskite solar cells (PVSCs) with its excellent optical and electrical properties as well as facile accessibility. However, for high-performance PVSCs, the electron mobility of SnO2 should be further improved by optimizing its film quality. Herein, we report a poly(vinylpyrrolidone) (PVP)-doped SnO2 (P-SnO2) as an ETL for PVSCs with increased efficiencies and improved stability. The P-SnO2 film exhibits improved electron transport over the control SnO2. At the same time, the perovskite grown on P-SnO2 shows more uniform crystalline grains, higher electron mobility and lower defect density than the control sample grown on the pure SnO2. Moreover, P-SnO2 can efficiently extract electrons from the perovskite layer with its optimal conduction band. Therefore, the optimized device based on P-SnO2 shows an improved power conversion efficiency (PCE) of 19.42% compared with the control PVSC based on SnO2, which exhibits a PCE of 18.05%. Furthermore, the P-SnO2-based devices show reduced hysteresis and better stability without any encapsulation. Our results provide a facile strategy to fabricate PVSCs with improved performance by incorporating a small amount of PVP into the SnO2 ETL.

收录类别SCI ; SCIE ; EI
资助项目Strategic Priority Research Program of CAS[XDB20030300]
WOS研究方向Materials Science ; Physics
WOS类目Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号WOS:000490152800015
出版者ROYAL SOC CHEMISTRY
EI主题词Efficiency ; Electron mobility ; Electron transport properties ; Perovskite ; Thin films ; Tin oxides
WOS关键词HIGHLY EFFICIENT
原始文献类型Article
引用统计
文献类型期刊论文
条目标识符https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/80430
专题物质科学与技术学院_硕士生
物质科学与技术学院_博士生
通讯作者Zheng, Qingdong
作者单位1.Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, 155 Yangqiao West Rd, Fuzhou 350002, Fujian, Peoples R China
2.Chinese Acad Sci, Fujian Inst Res Struct Matter, CAS Key Lab Design & Assembly Funct Nanastruct, 155 Yangqiao West Rd, Fuzhou 350002, Fujian, Peoples R China
3.ShanghaiTech Univ, Sch Phys Sci & Technol, 100 Haike Rd, Shanghai 201210, Peoples R China
第一作者单位物质科学与技术学院
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Wang, Di,Chen, Shan-Ci,Zheng, Qingdong. Poly(vinylpyrrolidone)-doped SnO2 as an electron transport layer for perovskite solar cells with improved performance[J]. JOURNAL OF MATERIALS CHEMISTRY C,2019,7(39):12204-12210.
APA Wang, Di,Chen, Shan-Ci,&Zheng, Qingdong.(2019).Poly(vinylpyrrolidone)-doped SnO2 as an electron transport layer for perovskite solar cells with improved performance.JOURNAL OF MATERIALS CHEMISTRY C,7(39),12204-12210.
MLA Wang, Di,et al."Poly(vinylpyrrolidone)-doped SnO2 as an electron transport layer for perovskite solar cells with improved performance".JOURNAL OF MATERIALS CHEMISTRY C 7.39(2019):12204-12210.
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