Highly Efficient Perovskite-Perovskite Tandem Solar Cells Reaching 80% of the Theoretical Limit in Photovoltage
Abstract
Organic–inorganic hybrid perovskite multijunction solar cells have immense potential to realize power conversion efficiencies (PCEs) beyond the Shockley–Queisser limit of single-junction solar cells; however, they are limited by large nonideal photovoltage loss (V oc,loss) in small- and large-bandgap subcells. Here, an integrated approach is utilized to improve the V oc of subcells with optimized bandgaps and fabricate perovskite–perovskite tandem solar cells with small V oc,loss. A fullerene variant, Indene-C60 bis-adduct, is used to achieve optimized interfacial contact in a small-bandgap (≈1.2 eV) subcell, which facilitates higher quasi-Fermi level splitting, reduces nonradiative recombination, alleviates hysteresis instabilities, and improves V oc to 0.84 V. Compositional engineering of large-bandgap (≈1.8 eV) perovskite is employed to realize a subcell with a transparent top electrode and photostabilized V oc of 1.22 V. The resultant monolithic perovskite–perovskite tandem solar cell shows a high V oc of 1.98 V (approaching 80% of the theoretical limit) and a stabilized PCE of 18.5%. The significantly minimized nonideal V oc,loss is better than state-of-the-art silicon–perovskite tandem solar cells, which highlights the prospects of using perovskite–perovskite tandems for solar-energy generation. It also unlocks opportunities for solar water splitting using hybrid perovskites with solar-to-hydrogen efficiencies beyond 15%.
- Authors:
-
- Univ. of Washington, Seattle, WA (United States). Dept. of Materials Science and Engineering
- Univ. of Washington, Seattle, WA (United States). Dept. of Chemical Engineering. Molecular Engineering and Sciences Inst.
- Univ. of Washington, Seattle, WA (United States). Dept. of Materials Science and Engineering; City Univ. of Hong Kong (Hong Kong). Dept. of Biology and Chemistry
- Publication Date:
- Research Org.:
- Univ. of Washington, Seattle, WA (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office; National Science Foundation (NSF); Office of Naval Research (ONR) (United States); Asian Office of Aerospace Research and Development (AOARD) (United States)
- OSTI Identifier:
- 1533046
- Alternate Identifier(s):
- OSTI ID: 1380026
- Grant/Contract Number:
- EE0006710; DMR-1608279; ECC-1542101; N00014-17-1-2260; FA2386-15-1-4106
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Advanced Materials
- Additional Journal Information:
- Journal Volume: 29; Journal Issue: 34; Journal ID: ISSN 0935-9648
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; hysteresis and photostability; monolithic tandem; open-circuit voltage; optical simulations; solar water splitting
Citation Formats
Rajagopal, Adharsh, Yang, Zhibin, Jo, Sae Byeok, Braly, Ian L., Liang, Po-Wei, Hillhouse, Hugh W., and Jen, Alex K. -Y. Highly Efficient Perovskite-Perovskite Tandem Solar Cells Reaching 80% of the Theoretical Limit in Photovoltage. United States: N. p., 2017.
Web. doi:10.1002/adma.201702140.
Rajagopal, Adharsh, Yang, Zhibin, Jo, Sae Byeok, Braly, Ian L., Liang, Po-Wei, Hillhouse, Hugh W., & Jen, Alex K. -Y. Highly Efficient Perovskite-Perovskite Tandem Solar Cells Reaching 80% of the Theoretical Limit in Photovoltage. United States. https://doi.org/10.1002/adma.201702140
Rajagopal, Adharsh, Yang, Zhibin, Jo, Sae Byeok, Braly, Ian L., Liang, Po-Wei, Hillhouse, Hugh W., and Jen, Alex K. -Y. Mon .
"Highly Efficient Perovskite-Perovskite Tandem Solar Cells Reaching 80% of the Theoretical Limit in Photovoltage". United States. https://doi.org/10.1002/adma.201702140. https://www.osti.gov/servlets/purl/1533046.
@article{osti_1533046,
title = {Highly Efficient Perovskite-Perovskite Tandem Solar Cells Reaching 80% of the Theoretical Limit in Photovoltage},
author = {Rajagopal, Adharsh and Yang, Zhibin and Jo, Sae Byeok and Braly, Ian L. and Liang, Po-Wei and Hillhouse, Hugh W. and Jen, Alex K. -Y.},
abstractNote = {Organic–inorganic hybrid perovskite multijunction solar cells have immense potential to realize power conversion efficiencies (PCEs) beyond the Shockley–Queisser limit of single-junction solar cells; however, they are limited by large nonideal photovoltage loss (V oc,loss) in small- and large-bandgap subcells. Here, an integrated approach is utilized to improve the V oc of subcells with optimized bandgaps and fabricate perovskite–perovskite tandem solar cells with small V oc,loss. A fullerene variant, Indene-C60 bis-adduct, is used to achieve optimized interfacial contact in a small-bandgap (≈1.2 eV) subcell, which facilitates higher quasi-Fermi level splitting, reduces nonradiative recombination, alleviates hysteresis instabilities, and improves V oc to 0.84 V. Compositional engineering of large-bandgap (≈1.8 eV) perovskite is employed to realize a subcell with a transparent top electrode and photostabilized V oc of 1.22 V. The resultant monolithic perovskite–perovskite tandem solar cell shows a high V oc of 1.98 V (approaching 80% of the theoretical limit) and a stabilized PCE of 18.5%. The significantly minimized nonideal V oc,loss is better than state-of-the-art silicon–perovskite tandem solar cells, which highlights the prospects of using perovskite–perovskite tandems for solar-energy generation. It also unlocks opportunities for solar water splitting using hybrid perovskites with solar-to-hydrogen efficiencies beyond 15%.},
doi = {10.1002/adma.201702140},
journal = {Advanced Materials},
number = 34,
volume = 29,
place = {United States},
year = {Mon Jul 10 00:00:00 EDT 2017},
month = {Mon Jul 10 00:00:00 EDT 2017}
}
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