Enhancing Charge Transport of 2D Perovskite Passivation Agent for Wide-Bandgap Perovskite Solar Cells Beyond 21%
Abstract
The replacement of a small amount of organic cations with bulkier organic spacer cations in the perovskite precursor solution to form a 2D perovskite passivation agent (2D-PPA) in 3D perovskite thin films has recently become a promising strategy for developing perovskite solar cells (PSCs) with long-term stability and high efficiency. However, the long, bulky organic cations often form a barrier, hindering charge transport. In this study, for the first time, 2D-PPA engineering based on wide-bandgap (~1.68?eV) perovskites are reported. Pentafluorophenethylammonium (F5PEA+) is introduced to partially replace phenylethylammonium (PEA+) as the 2D-PPA, forming a strong noncovalent interaction between the two bulky cations. The charge transport across and within the planes of pure 2D perovskites, based on mixed ammoniums, increases by a factor of five and three compared with that of mono-cation 2D perovskites, respectively. The perovskite films based on mixed-ammonium (F5PEA+-PEA+) 2D-PPA exhibit similar surface morphology and crystal structure, but longer carrier lifetime, lower exciton binding energy, less trap density and higher conductivity, in comparison with those using mono-cation (PEA+) 2D-PPA. The performance of PSCs based on mixed-cation 2D-PPA is enhanced from 19.58% to 21.10% along with improved stability, which is the highest performance for reported wide-bandgap PSCs.
- Authors:
-
[2];
[2];
[2];
- National Renewable Energy Lab. (NREL), Golden, CO (United States); Univ. of Colorado, Boulder, CO (United States)
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Univ. of North Carolina, Chapel Hill, NC (United States)
- Publication Date:
- Research Org.:
- National Renewable Energy Lab. (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); National Research Foundation of Korea (NRF)
- OSTI Identifier:
- 1660039
- Alternate Identifier(s):
- OSTI ID: 1605949
- Report Number(s):
- NREL/JA-5900-75004
Journal ID: ISSN 2367-198X; MainId:5965;UUID:0fbcaa73-ccdf-e911-9c26-ac162d87dfe5;MainAdminID:13804
- Grant/Contract Number:
- AC36-08GO28308; 2019R1F1A1064095
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Solar RRL
- Additional Journal Information:
- Journal Volume: 4; Journal Issue: 6; Journal ID: ISSN 2367-198X
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 14 SOLAR ENERGY; 2D perovskite passivation agent; charge transport; wide-bandgap perovskite solar cell
Citation Formats
Ye, Jiselle, Tong, Jinhui, Hu, Jun, Xiao, Chuanxiao, Lu, Haipeng, Dunfield, Sean, Kim, Dong Hoe, Chen, Xihan, Larson, Bryon W., Hao, Ji, Wang, Kang, Zhao, Qian, Chen, Zheng, Hu, Huamin, You, Wei, Berry, Joseph, Zhang, Fei, and Zhu, Kai. Enhancing Charge Transport of 2D Perovskite Passivation Agent for Wide-Bandgap Perovskite Solar Cells Beyond 21%. United States: N. p., 2020.
Web. doi:10.1002/solr.202000082.
Ye, Jiselle, Tong, Jinhui, Hu, Jun, Xiao, Chuanxiao, Lu, Haipeng, Dunfield, Sean, Kim, Dong Hoe, Chen, Xihan, Larson, Bryon W., Hao, Ji, Wang, Kang, Zhao, Qian, Chen, Zheng, Hu, Huamin, You, Wei, Berry, Joseph, Zhang, Fei, & Zhu, Kai. Enhancing Charge Transport of 2D Perovskite Passivation Agent for Wide-Bandgap Perovskite Solar Cells Beyond 21%. United States. https://doi.org/10.1002/solr.202000082
Ye, Jiselle, Tong, Jinhui, Hu, Jun, Xiao, Chuanxiao, Lu, Haipeng, Dunfield, Sean, Kim, Dong Hoe, Chen, Xihan, Larson, Bryon W., Hao, Ji, Wang, Kang, Zhao, Qian, Chen, Zheng, Hu, Huamin, You, Wei, Berry, Joseph, Zhang, Fei, and Zhu, Kai. Mon .
"Enhancing Charge Transport of 2D Perovskite Passivation Agent for Wide-Bandgap Perovskite Solar Cells Beyond 21%". United States. https://doi.org/10.1002/solr.202000082. https://www.osti.gov/servlets/purl/1660039.
@article{osti_1660039,
title = {Enhancing Charge Transport of 2D Perovskite Passivation Agent for Wide-Bandgap Perovskite Solar Cells Beyond 21%},
author = {Ye, Jiselle and Tong, Jinhui and Hu, Jun and Xiao, Chuanxiao and Lu, Haipeng and Dunfield, Sean and Kim, Dong Hoe and Chen, Xihan and Larson, Bryon W. and Hao, Ji and Wang, Kang and Zhao, Qian and Chen, Zheng and Hu, Huamin and You, Wei and Berry, Joseph and Zhang, Fei and Zhu, Kai},
abstractNote = {The replacement of a small amount of organic cations with bulkier organic spacer cations in the perovskite precursor solution to form a 2D perovskite passivation agent (2D-PPA) in 3D perovskite thin films has recently become a promising strategy for developing perovskite solar cells (PSCs) with long-term stability and high efficiency. However, the long, bulky organic cations often form a barrier, hindering charge transport. In this study, for the first time, 2D-PPA engineering based on wide-bandgap (~1.68?eV) perovskites are reported. Pentafluorophenethylammonium (F5PEA+) is introduced to partially replace phenylethylammonium (PEA+) as the 2D-PPA, forming a strong noncovalent interaction between the two bulky cations. The charge transport across and within the planes of pure 2D perovskites, based on mixed ammoniums, increases by a factor of five and three compared with that of mono-cation 2D perovskites, respectively. The perovskite films based on mixed-ammonium (F5PEA+-PEA+) 2D-PPA exhibit similar surface morphology and crystal structure, but longer carrier lifetime, lower exciton binding energy, less trap density and higher conductivity, in comparison with those using mono-cation (PEA+) 2D-PPA. The performance of PSCs based on mixed-cation 2D-PPA is enhanced from 19.58% to 21.10% along with improved stability, which is the highest performance for reported wide-bandgap PSCs.},
doi = {10.1002/solr.202000082},
journal = {Solar RRL},
number = 6,
volume = 4,
place = {United States},
year = {2020},
month = {3}
}
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