Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/85359

Dual Interfacial Modifications Enable High Performance Semitransparent Perovskite Solar Cells with Large Open Circuit Voltage and Fill Factor

Authors Xue, Qifan
Bai, Yang HKUST affiliated (currently or previously)
Liu, Meiyue
Xia, Ruoxi
Hu, Zhicheng
Chen, Ziming
Jiang, Xiao-Fang
Huang, Fei
Yang, Shihe View this author's profile
Matsuo, Yutaka
Yip, Hin-Lap
Cao, Yong
Issue Date 2017
Source Advanced Energy Materials , v. 7, (9), May 2017
Summary In this work, both anode and cathode interfaces of p-i-n CH3NH3PbI3 perovskite solar cells (PVSCs) are simultaneously modified to achieve large open-circuit voltage (Voc) and fill factor (FF) for high performance semitransparent PVSCs (ST-PVSCs). At the anode, modified NiO serves as an efficient hole transport layer with appropriate surface property to promote the formation of smooth perovskite film with high coverage. At the cathode, a fullerene bisadduct, C60(CH2)(Ind), with a shallow lowest unoccupied molecular orbital level, is introduced to replace the commonly used phenyl-C61-butyric acid methyl ester (PCBM) as an alternative electron transport layer in PVSCs for better energy level matching with the conduction band of the perovskite layer. Therefore, the Voc, FF and power conversion efficiency (PCE) of the PVSCs increase from 1.05 V, 0.74 and 16.2% to 1.13 V, 0.80 and 18.1% when the PCBM is replaced by C60(CH2)(Ind). With the advantages of high Voc and FF, ST-PVSCs are also fabricated using an ultrathin transparent Ag as cathode, showing an encouraging PCEs of 12.6% with corresponding average visible transmittance (AVT) over 20%. These are the highest PCEs reported for ST-PVSCs with similar AVTs paving the way for using ST-PVSCs as power generating windows. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Subjects
ISSN 1614-6832
1614-6840
Language English
Format Article
Access View full-text via DOI
View full-text via Web of Science
View full-text via Scopus
Find@HKUST