The DOI matches its Crossref record; 19 of the 19 references it cites were found in a registry or an index.
Defect-Induced Band-Edge Reconstruction of a Bismuth-Halide Double Perovskite for Visible-Light Absorption
Open accessAbstract
Abstract Halide double perovskites have recently been developed as less toxic analogs of the lead perovskite solar-cell absorbers APbX3 (A = monovalent cation; X = Br or I). However, all known halide double perovskites have large bandgaps that afford weak visible-light absorption. The first halide double perovskite evaluated as an absorber, Cs2AgBiBr6 (1), has a bandgap of 1.95 eV. Here, we show that dilute alloying decreases 1’s bandgap by ca. 0.5 eV. Importantly, time-resolved photoconductivity measurements reveal long-lived carriers with microsecond lifetimes in the alloyed material, which is very promising for photovoltaic applications. The alloyed perovskite described herein is the first double perovskite to show comparable bandgap energy and carrier lifetime to those of (CH3NH3)PbI3. By describing how energy- and symmetry-matched impurity orbitals, at low concentrations, dramatically alter 1’s band edges, we open a potential pathway for the large and diverse family of halide double perovskites to compete with APbX3 absorbers.
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Cites
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Cited by
Zhang, Z., Sun, Q., Lu, Y., Lu, F., Mu, X., Wei, S.-H., & Sui, M. (2022) · Nature Communications · doi:10.1038/s41467-022-31016-w · Cited by 452
Structural and Functional Diversity in Lead‐Free Halide Perovskite Materials
Ning, W., & Gao, F. (2019) · Advanced Materials · doi:10.1002/adma.201900326 · Cited by 348
An Ensemble Learning Platform for the Large-Scale Exploration of New Double Perovskites
Wang, Z., Han, Y., Lin, X., Cai, J., Wu, S., & Li, J. (2022) · ACS Applied Materials & Interfaces · doi:10.1021/acsami.1c18477 · Cited by 43
Metadata
- Authors
- Slavney, A. H., Leppert, L., Bartesaghi, D., Gold-Parker, A., Toney, M. F., Savenije, T. J., Neaton, J. B., & Karunadasa, H. I.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2017-04-04
- Volume
- 139
- Issue
- 14
- Pages
- 5015-5018
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2600774896
- Cited by
- 363
- References
- 19
- FWCI
- 14.66
- Type
- journal article
- Language
- en
- Open access
- green
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- Slavney, A. H., Leppert, L., Bartesaghi, D., Gold-Parker, A., Toney, M. F., Savenije, T. J., Neaton, J. B., & Karunadasa, H. I. (2017). Defect-Induced Band-Edge Reconstruction of a Bismuth-Halide Double Perovskite for Visible-Light Absorption. Journal of the American Chemical Society. https://doi.org/10.1021/jacs.7b01629
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