Enhancing electron diffusion length in narrow-bandgap perovskites for efficient monolithic perovskite tandem solar cells
Abstract
Developing multijunction perovskite solar cells (PSCs) is an attractive route to boost PSC efficiencies to above the single-junction Shockley-Queisser limit. However, commonly used tin-based narrow-bandgap perovskites have shorter carrier diffusion lengths and lower absorption coefficient than lead-based perovskites, limiting the efficiency of perovskite-perovskite tandem solar cells. In this work, we discover that the charge collection efficiency in tin-based PSCs is limited by a short diffusion length of electrons. Adding 0.03 molar percent of cadmium ions into tin-perovskite precursors reduce the background free hole concentration and electron trap density, yielding a long electron diffusion length of 2.72 ± 0.15 um. It increases the optimized thickness of narrow-bandgap perovskite films to 1000 nm, yielding exceptional stabilized efficiencies of 20.2 and 22.7% for single junction narrow-bandgap PSCs and monolithic perovskite-perovskite tandem cells, respectively. This work provides a promising method to enhance the optoelectronic properties of narrow-bandgap perovskites and unleash the potential of perovskite-perovskite tandem solar cells.
- Authors:
-
- Univ. of North Carolina, Chapel Hill, NC (United States)
- National Renewable Energy Lab. (NREL), Golden, 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 Science (SC), Basic Energy Sciences (BES); U.S. Department of Defense (DOD), Office of Naval Research; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
- OSTI Identifier:
- 1570187
- Report Number(s):
- NREL/JA-5900-73936
Journal ID: ISSN 2041-1723
- Grant/Contract Number:
- AC36-08GO28308
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Nature Communications
- Additional Journal Information:
- Journal Volume: 10; Journal Issue: 1; Journal ID: ISSN 2041-1723
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 14 SOLAR ENERGY; 36 MATERIALS SCIENCE; tandem cell; perovskite; carrier dynamics
Citation Formats
Yang, Zhibin, Yu, Zhenhua, Wei, Haotong, Xiao, Xun, Ni, Zhenyi, Chen, Bo, Deng, Yehao, Habisreutinger, Severin N., Chen, Xihan, Wang, Kang, Zhao, Jingjing, Rudd, Peter N., Berry, Joseph J., Beard, Matthew C., and Huang, Jinsong. Enhancing electron diffusion length in narrow-bandgap perovskites for efficient monolithic perovskite tandem solar cells. United States: N. p., 2019.
Web. doi:10.1038/s41467-019-12513-x.
Yang, Zhibin, Yu, Zhenhua, Wei, Haotong, Xiao, Xun, Ni, Zhenyi, Chen, Bo, Deng, Yehao, Habisreutinger, Severin N., Chen, Xihan, Wang, Kang, Zhao, Jingjing, Rudd, Peter N., Berry, Joseph J., Beard, Matthew C., & Huang, Jinsong. Enhancing electron diffusion length in narrow-bandgap perovskites for efficient monolithic perovskite tandem solar cells. United States. https://doi.org/10.1038/s41467-019-12513-x
Yang, Zhibin, Yu, Zhenhua, Wei, Haotong, Xiao, Xun, Ni, Zhenyi, Chen, Bo, Deng, Yehao, Habisreutinger, Severin N., Chen, Xihan, Wang, Kang, Zhao, Jingjing, Rudd, Peter N., Berry, Joseph J., Beard, Matthew C., and Huang, Jinsong. 2019.
"Enhancing electron diffusion length in narrow-bandgap perovskites for efficient monolithic perovskite tandem solar cells". United States. https://doi.org/10.1038/s41467-019-12513-x. https://www.osti.gov/servlets/purl/1570187.
@article{osti_1570187,
title = {Enhancing electron diffusion length in narrow-bandgap perovskites for efficient monolithic perovskite tandem solar cells},
author = {Yang, Zhibin and Yu, Zhenhua and Wei, Haotong and Xiao, Xun and Ni, Zhenyi and Chen, Bo and Deng, Yehao and Habisreutinger, Severin N. and Chen, Xihan and Wang, Kang and Zhao, Jingjing and Rudd, Peter N. and Berry, Joseph J. and Beard, Matthew C. and Huang, Jinsong},
abstractNote = {Developing multijunction perovskite solar cells (PSCs) is an attractive route to boost PSC efficiencies to above the single-junction Shockley-Queisser limit. However, commonly used tin-based narrow-bandgap perovskites have shorter carrier diffusion lengths and lower absorption coefficient than lead-based perovskites, limiting the efficiency of perovskite-perovskite tandem solar cells. In this work, we discover that the charge collection efficiency in tin-based PSCs is limited by a short diffusion length of electrons. Adding 0.03 molar percent of cadmium ions into tin-perovskite precursors reduce the background free hole concentration and electron trap density, yielding a long electron diffusion length of 2.72 ± 0.15 um. It increases the optimized thickness of narrow-bandgap perovskite films to 1000 nm, yielding exceptional stabilized efficiencies of 20.2 and 22.7% for single junction narrow-bandgap PSCs and monolithic perovskite-perovskite tandem cells, respectively. This work provides a promising method to enhance the optoelectronic properties of narrow-bandgap perovskites and unleash the potential of perovskite-perovskite tandem solar cells.},
doi = {10.1038/s41467-019-12513-x},
url = {https://www.osti.gov/biblio/1570187},
journal = {Nature Communications},
issn = {2041-1723},
number = 1,
volume = 10,
place = {United States},
year = {Thu Oct 03 00:00:00 EDT 2019},
month = {Thu Oct 03 00:00:00 EDT 2019}
}
Web of Science
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Works referencing / citing this record:
Highly Efficient Sn–Pb Perovskite Solar Cell and High‐Performance All‐Perovskite Four‐Terminal Tandem Solar Cell
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Figures / Tables found in this record: