Enhanced Charge Transport by Incorporating Formamidinium and Cesium Cations into Two‐Dimensional Perovskite Solar Cells
Abstract
Abstract Organic‐inorganic hybrid two‐dimensional (2D) perovskites ( n ≤5) have recently attracted significant attention because of their promising stability and optoelectronic properties. Normally, 2D perovskites contain a monocation [e.g., methylammonium (MA + ) or formamidinium (FA + )]. Reported here for the first time is the fabrication of 2D perovskites ( n =5) with mixed cations of MA + , FA + , and cesium (Cs + ). The use of these triple cations leads to the formation of a smooth, compact surface morphology with larger grain size and fewer grain boundaries compared to the conventional MA‐based counterpart. The resulting perovskite also exhibits longer carrier lifetime and higher conductivity in triple cation 2D perovskite solar cells (PSCs). The power conversion efficiency (PCE) of 2D PSCs with triple cations was enhanced by more than 80 % (from 7.80 to 14.23 %) compared to PSCs fabricated with a monocation. The PCE is also higher than that of PSCs based on binary cation (MA + ‐FA + or MA + ‐Cs + ) 2D structures.
- Authors:
-
[2]
- Chemistry and Nanoscience Center National Renewable Energy Laboratory Golden CO 80401 USA, Department of Chemistry Colorado School of Mines Golden CO USA
- Chemistry and Nanoscience Center National Renewable Energy Laboratory Golden CO 80401 USA
- Materials Science Center National Renewable Energy Laboratory Golden CO 80401 USA
- Materials Science Center National Renewable Energy Laboratory Golden CO 80401 USA, Renewable and Sustainable Energy Institute University of Colorado Boulder CO 80309 USA, Materials Science and Engineering Program University of Colorado Boulder CO 80309 USA
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1566174
- Grant/Contract Number:
- AC36-08GO28308
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Angewandte Chemie
- Additional Journal Information:
- Journal Name: Angewandte Chemie Journal Volume: 131 Journal Issue: 34; Journal ID: ISSN 0044-8249
- Publisher:
- Wiley Blackwell (John Wiley & Sons)
- Country of Publication:
- Germany
- Language:
- English
Citation Formats
Gao, Liguo, Zhang, Fei, Chen, Xihan, Xiao, Chuanxiao, Larson, Bryon W., Dunfield, Sean P., Berry, Joseph J., and Zhu, Kai. Enhanced Charge Transport by Incorporating Formamidinium and Cesium Cations into Two‐Dimensional Perovskite Solar Cells. Germany: N. p., 2019.
Web. doi:10.1002/ange.201905690.
Gao, Liguo, Zhang, Fei, Chen, Xihan, Xiao, Chuanxiao, Larson, Bryon W., Dunfield, Sean P., Berry, Joseph J., & Zhu, Kai. Enhanced Charge Transport by Incorporating Formamidinium and Cesium Cations into Two‐Dimensional Perovskite Solar Cells. Germany. https://doi.org/10.1002/ange.201905690
Gao, Liguo, Zhang, Fei, Chen, Xihan, Xiao, Chuanxiao, Larson, Bryon W., Dunfield, Sean P., Berry, Joseph J., and Zhu, Kai. Thu .
"Enhanced Charge Transport by Incorporating Formamidinium and Cesium Cations into Two‐Dimensional Perovskite Solar Cells". Germany. https://doi.org/10.1002/ange.201905690.
@article{osti_1566174,
title = {Enhanced Charge Transport by Incorporating Formamidinium and Cesium Cations into Two‐Dimensional Perovskite Solar Cells},
author = {Gao, Liguo and Zhang, Fei and Chen, Xihan and Xiao, Chuanxiao and Larson, Bryon W. and Dunfield, Sean P. and Berry, Joseph J. and Zhu, Kai},
abstractNote = {Abstract Organic‐inorganic hybrid two‐dimensional (2D) perovskites ( n ≤5) have recently attracted significant attention because of their promising stability and optoelectronic properties. Normally, 2D perovskites contain a monocation [e.g., methylammonium (MA + ) or formamidinium (FA + )]. Reported here for the first time is the fabrication of 2D perovskites ( n =5) with mixed cations of MA + , FA + , and cesium (Cs + ). The use of these triple cations leads to the formation of a smooth, compact surface morphology with larger grain size and fewer grain boundaries compared to the conventional MA‐based counterpart. The resulting perovskite also exhibits longer carrier lifetime and higher conductivity in triple cation 2D perovskite solar cells (PSCs). The power conversion efficiency (PCE) of 2D PSCs with triple cations was enhanced by more than 80 % (from 7.80 to 14.23 %) compared to PSCs fabricated with a monocation. The PCE is also higher than that of PSCs based on binary cation (MA + ‐FA + or MA + ‐Cs + ) 2D structures.},
doi = {10.1002/ange.201905690},
journal = {Angewandte Chemie},
number = 34,
volume = 131,
place = {Germany},
year = {Thu Jul 11 00:00:00 EDT 2019},
month = {Thu Jul 11 00:00:00 EDT 2019}
}
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