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Perovskite films with a sacrificial cation for solar cells with enhanced stability based on carbon electrodes
Li, Haiyan; Yang, Songwang; Gong, Shuiping; Wu, Jiawei; Pan, Shangke; Chen, Zongqi; Zhao, Qingbao; Shou, Chunhui; Shen, Qu
2019-08-15
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume797Pages:811
SubtypeArticle
AbstractOrganic-inorganic lead halide perovskite solar cells have high power conversion efficiency; however, their poor environmental stability is still a problem that needs to be solved. In this study, a tetrabutylammonium cation is introduced into mixed-cation lead a mixed-halide Cs-0.05(FA(0.83-)MA(0.17))(0.95)Pb(I0.83Br0.17)(3) perovskite as a sacrificial cation to enhance the stability of the corresponding solar cells. Tetrabutylammonium cations located at grain boundaries are beneficial for the formation of two-dimensional perovskite grains perpendicular to the substrate during heat treatment, which can enhance the stability of solar cells against moisture. By optimizing the content of tetrabutylammonium iodide ions, a maximum power conversion efficiency of 12% is achieved for the solar cell with the structure of FTO/c-TiO2/m-TiO2/perovskite/carbon. Without encapsulation, the tetrabutylammonium contained perovskite solar cell does not obviously degrade at ambient atmosphere (60% relative humidity and 27 degrees C) for over 1000 h. Moreover, this solar cell can retain over 80% of its initial efficiency for 500 h at 85 degrees C and in dry air. (C) 2019 Elsevier B.V. All rights reserved.
KeywordSacrificial cation Tetrabutylammonium iodide (TBA) Carbon electrode Perovskite solar cells Stability
DOI10.1016/j.jallcom.2019.05.148
Language英语
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
PublisherELSEVIER SCIENCE SA
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Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/26908
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Li, Haiyan,Yang, Songwang,Gong, Shuiping,et al. Perovskite films with a sacrificial cation for solar cells with enhanced stability based on carbon electrodes[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,797:811.
APA Li, Haiyan.,Yang, Songwang.,Gong, Shuiping.,Wu, Jiawei.,Pan, Shangke.,...&Shen, Qu.(2019).Perovskite films with a sacrificial cation for solar cells with enhanced stability based on carbon electrodes.JOURNAL OF ALLOYS AND COMPOUNDS,797,811.
MLA Li, Haiyan,et al."Perovskite films with a sacrificial cation for solar cells with enhanced stability based on carbon electrodes".JOURNAL OF ALLOYS AND COMPOUNDS 797(2019):811.
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