Ideal Bandgap Organic–Inorganic Hybrid Perovskite Solar Cells
Abstract
Abstract Extremely high power conversion efficiencies (PCEs) of ≈20–22% are realized through intensive research and development of 1.5–1.6 eV bandgap perovskite absorbers. However, development of ideal bandgap (1.3–1.4 eV) absorbers is pivotal to further improve PCE of single junction perovskite solar cells (PVSCs) because of a better balance between absorption loss of sub‐bandgap photons and thermalization loss of above‐bandgap photons as demonstrated by the Shockley–Queisser detailed balanced calculation. Ideal bandgap PVSCs are currently hindered by the poor optoelectronic quality of perovskite absorbers and their PCEs have stagnated at <15%. In this work, through systematic photoluminescence and photovoltaic analysis, a new ideal bandgap (1.35 eV) absorber composition (MAPb 0.5 Sn 0.5 (I 0.8 Br 0.2 ) 3 ) is rationally designed and developed, which possesses lower nonradiative recombination states, band edge disorder, and Urbach energy coupled with a higher absorption coefficient, which yields a reduced V oc,loss (0.45 V) and improved PCE (as high as 17.63%) for the derived PVSCs. This work provides a promising platform for unleashing the complete potential of ideal bandgap PVSCs and prospects for further improvement.
- Authors:
-
- Department of Materials Science and Engineering University of Washington Seattle WA 98195 USA
- Department of Materials Science and Engineering University of Washington Seattle WA 98195 USA, Department of Chemistry City University of Hong Kong Kowloon Hong Kong, Department of Materials Science and Engineering City University of Hong Kong Kowloon Hong Kong
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1413784
- Grant/Contract Number:
- DE‐EE 0006710
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Advanced Materials
- Additional Journal Information:
- Journal Name: Advanced Materials Journal Volume: 29 Journal Issue: 47; Journal ID: ISSN 0935-9648
- Publisher:
- Wiley Blackwell (John Wiley & Sons)
- Country of Publication:
- Germany
- Language:
- English
Citation Formats
Yang, Zhibin, Rajagopal, Adharsh, and Jen, Alex K. ‐Y. Ideal Bandgap Organic–Inorganic Hybrid Perovskite Solar Cells. Germany: N. p., 2017.
Web. doi:10.1002/adma.201704418.
Yang, Zhibin, Rajagopal, Adharsh, & Jen, Alex K. ‐Y. Ideal Bandgap Organic–Inorganic Hybrid Perovskite Solar Cells. Germany. https://doi.org/10.1002/adma.201704418
Yang, Zhibin, Rajagopal, Adharsh, and Jen, Alex K. ‐Y. Tue .
"Ideal Bandgap Organic–Inorganic Hybrid Perovskite Solar Cells". Germany. https://doi.org/10.1002/adma.201704418.
@article{osti_1413784,
title = {Ideal Bandgap Organic–Inorganic Hybrid Perovskite Solar Cells},
author = {Yang, Zhibin and Rajagopal, Adharsh and Jen, Alex K. ‐Y.},
abstractNote = {Abstract Extremely high power conversion efficiencies (PCEs) of ≈20–22% are realized through intensive research and development of 1.5–1.6 eV bandgap perovskite absorbers. However, development of ideal bandgap (1.3–1.4 eV) absorbers is pivotal to further improve PCE of single junction perovskite solar cells (PVSCs) because of a better balance between absorption loss of sub‐bandgap photons and thermalization loss of above‐bandgap photons as demonstrated by the Shockley–Queisser detailed balanced calculation. Ideal bandgap PVSCs are currently hindered by the poor optoelectronic quality of perovskite absorbers and their PCEs have stagnated at <15%. In this work, through systematic photoluminescence and photovoltaic analysis, a new ideal bandgap (1.35 eV) absorber composition (MAPb 0.5 Sn 0.5 (I 0.8 Br 0.2 ) 3 ) is rationally designed and developed, which possesses lower nonradiative recombination states, band edge disorder, and Urbach energy coupled with a higher absorption coefficient, which yields a reduced V oc,loss (0.45 V) and improved PCE (as high as 17.63%) for the derived PVSCs. This work provides a promising platform for unleashing the complete potential of ideal bandgap PVSCs and prospects for further improvement.},
doi = {10.1002/adma.201704418},
journal = {Advanced Materials},
number = 47,
volume = 29,
place = {Germany},
year = {Tue Nov 14 00:00:00 EST 2017},
month = {Tue Nov 14 00:00:00 EST 2017}
}
https://doi.org/10.1002/adma.201704418
Web of Science
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