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];
[2]
- National Renewable Energy Lab. (NREL), Golden, CO (United States); Colorado School of Mines, Golden, CO (United States)
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- National Renewable Energy Lab. (NREL), Golden, CO (United States); Univ. of Colorado, Boulder, CO (United States)
- Publication Date:
- Research Org.:
- Energy Frontier Research Centers (EFRC) (United States). Center for Hybrid Organic-Inorganic Semiconductors for Energy (CHOISE); National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office; USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1529867
- Alternate Identifier(s):
- OSTI ID: 1548759
- Report Number(s):
- NREL/JA-5900-73862
Journal ID: ISSN 1433-7851
- Grant/Contract Number:
- AC36-08GO28308
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Angewandte Chemie (International Edition)
- Additional Journal Information:
- Journal Name: Angewandte Chemie (International Edition); Journal Volume: 58; Journal Issue: 34; Journal ID: ISSN 1433-7851
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 14 SOLAR ENERGY; 36 MATERIALS SCIENCE; perovskite solar cells; triple cations; charge transport; cation doping
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. United States: N. p., 2019.
Web. doi:10.1002/anie.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. United States. https://doi.org/10.1002/anie.201905690
Gao, Liguo, Zhang, Fei, Chen, Xihan, Xiao, Chuanxiao, Larson, Bryon W., Dunfield, Sean P., Berry, Joseph J., and Zhu, Kai. Wed .
"Enhanced Charge Transport by Incorporating Formamidinium and Cesium Cations into Two-Dimensional Perovskite Solar Cells". United States. https://doi.org/10.1002/anie.201905690. https://www.osti.gov/servlets/purl/1529867.
@article{osti_1529867,
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/anie.201905690},
journal = {Angewandte Chemie (International Edition)},
number = 34,
volume = 58,
place = {United States},
year = {2019},
month = {6}
}
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