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Morphology control of planar heterojunction perovskite solar cells with fluorinated PDI films as organic electron transport layer.

Authors :
Huang, Jiachi
Gu, Zhuowei
Zuo, Lijian
Ye, Tao
Chen, Hongzheng
Source :
Solar Energy. Aug2016, Vol. 133, p331-338. 8p.
Publication Year :
2016

Abstract

Morphology control is critical to achieve high efficiency CH 3 NH 3 PbI 3 perovskite solar cells (PSC). In this paper, fluorinated perylene diimide (FPDI) was used as novel organic electron transport material in planar heterojunction perovskite solar cells. The perovskite film was fabricated by sequential vacuum vapor deposition, and the film morphology could be controlled by optimizing the FPDI film morphology with short time solvent spin-coating or solvent vapor annealing (SVA). Dense and uniform perovskite film with high substrate coverage could be obtained when the FPDI film was treated by chloroform SVA for half an hour, and the fill factor (FF) of the perovskite solar cell increased from 30.44% to 55.20%, enhancing the power conversion efficiency (PCE) from 3.23% to 7.44%. The PCE of the best device reached 7.93%, which was comparable to that (8.25%) of the conventional ZnO electron transport layer based perovskite device prepared by the same method. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
0038092X
Volume :
133
Database :
Academic Search Index
Journal :
Solar Energy
Publication Type :
Academic Journal
Accession number :
115802552
Full Text :
https://doi.org/10.1016/j.solener.2016.04.017