Efficient and Stable Perovskite Solar Cells Prepared in Ambient Air Based on Surface-Modified Perovskite Layer

Liu, Chang1,2; Ding, Wenhui1; Zhou, Xianyong1; Gao, Jishu1; Cheng, Chun1; Zhao, Xingzhong2; Xu, Baomin1

2017-03-30

10.1021/acs.jpcc.7b00847

Journal of Physical Chemistry C   影响因子和分区

1932-7447

1932-7455

Among many photovoltaic conversion technologies, perovskite solar cells have received significant research interests as effective photovoltaic materials owing to their high solar conversion efficiencies and low cost. However, the performance of perovskite solar cells is limited by the instability of CH3NH3PbI3 to water and ambient moisture. To address this issue, in this study, we introduced a new fundamental approach that utilizes 4-tert-butylpyridine (tBP) as the surface modification agent to enhance the performance and stability of CH3NH3PbI3-based perovskite solar cells fabricated in ambient air. The tertiary butyl group in tBP is highly hydrophobic, leading to the formation a hydrophobic layer on the surface of CH3NH3PbI3, thus increasing the moisture stability of perovskite solar cells. With this strategy, the performance of perovskite solar cells prepared at even >50% RH in ambient air was tremendously enhanced by as much as 200% compared to that without tBP additive. Besides, the stability of perovskite solar cells in ambient air was also markedly improved.

SCI ; EI

英语

第一 ; 通讯

China Postdoctoral Science Foundation[2016M602347]

Chemistry ; Science & Technology - Other Topics ; Materials Science

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000398247500014

AMER CHEMICAL SOC

20172103694242

Hydrophobicity ; Moisture ; Perovskite ; Perovskite solar cells ; Solar power generation ; Stability ; Surface treatment

Minerals:482.2 ; Solar Power:615.2 ; Solar Cells:702.3 ; Physical Properties of Gases, Liquids and Solids:931.2

Web of Science

1.South Univ Sci & Technol China, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
2.Wuhan Univ, Dept Phys, Wuhan 430072, Hubei Province, Peoples R China

Liu, Chang,Ding, Wenhui,Zhou, Xianyong,et al. Efficient and Stable Perovskite Solar Cells Prepared in Ambient Air Based on Surface-Modified Perovskite Layer[J]. Journal of Physical Chemistry C,2017,121(12):6546-6553.

Liu, Chang.,Ding, Wenhui.,Zhou, Xianyong.,Gao, Jishu.,Cheng, Chun.,...&Xu, Baomin.(2017).Efficient and Stable Perovskite Solar Cells Prepared in Ambient Air Based on Surface-Modified Perovskite Layer.Journal of Physical Chemistry C,121(12),6546-6553.

Liu, Chang,et al."Efficient and Stable Perovskite Solar Cells Prepared in Ambient Air Based on Surface-Modified Perovskite Layer".Journal of Physical Chemistry C 121.12(2017):6546-6553.