The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.
Cs2AgBiX6 (X = Br, Cl): New Visible Light Absorbing, Lead-Free Halide Perovskite Semiconductors
Abstract
The double perovskites Cs 2 AgBiBr 6 and Cs 2 AgBiCl 6 have been synthesized from both solid state and solution routes. X-ray diffraction measurements show that both compounds adopt the cubic double perovskite structure, space group Fm 3̅ m, with lattice parameters of 11.2711(1) Å (X = Br) and 10.7774(2) Å (X = Cl). Diffuse reflectance measurements reveal band gaps of 2.19 eV (X = Br) and 2.77 eV (X = Cl) that are slightly smaller than the band gaps of the analogous lead halide perovskites, 2.26 eV for CH 3 NH 3 PbBr 3 and 3.00 eV for CH 3 NH 3 PbCl 3 . Band structure calculations indicate that the interaction between the Ag 4d-orbitals and the 3p/4p-orbitals of the halide ion modifies the valence band leading to an indirect band gap. Both compounds are stable when exposed to air, but Cs 2 AgBiBr 6 degrades over a period of weeks when exposed to both ambient air and light. These results show that halide double perovskite semiconductors are potentially an environmentally friendly alternative to the lead halide perovskite semiconductors.
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Cites
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Cited by
“Unleaded” Perovskites: Status Quo and Future Prospects of Tin‐Based Perovskite Solar Cells
Ke, W., Stoumpos, C. C., & Kanatzidis, M. G. (2019) · Advanced Materials · doi:10.1002/adma.201803230 · Cited by 533
Recent advances in perovskite solar cells: efficiency, stability and lead-free perovskite
Yang, S., Fu, W., Zhang, Z., Chen, H., & Li, C.-Z. (2017) · Journal of Materials Chemistry A · doi:10.1039/c7ta00366h · Cited by 486
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
Slavney, A. H., Leppert, L., Bartesaghi, D., Gold-Parker, A., Toney, M. F., Savenije, T. J., Neaton, J. B., & Karunadasa, H. I. (2017) · Journal of the American Chemical Society · doi:10.1021/jacs.7b01629 · Cited by 363
Lead‐Free Cs 2 BiAgBr 6 Double Perovskite‐Based Humidity Sensor with Superfast Recovery Time
Weng, Z., Qin, J., Umar, A. A., Wang, J., Zhang, X., Wang, H., Cui, X., Li, X., Zheng, L., & Zhan, Y. (2019) · Advanced Functional Materials · doi:10.1002/adfm.201902234 · Cited by 236
Metadata
- Authors
- McClure, E. T., Ball, M. R., Windl, W., & Woodward, P. M.
- Venue
- Chemistry of Materials
- Publisher
- American Chemical Society (ACS)
- Published
- 2016-02-24
- Volume
- 28
- Issue
- 5
- Pages
- 1348-1354
- ISSN
- 0897-4756 (ISSN-L)
- 1520-5002
- OpenAlex
- W2257548062
- Cited by
- 1,674
- References
- 3
- FWCI
- 51.07
- Type
- journal article
- Language
- en
- Open access
- closed
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- McClure, E. T., Ball, M. R., Windl, W., & Woodward, P. M. (2016). Cs2AgBiX6 (X = Br, Cl): New Visible Light Absorbing, Lead-Free Halide Perovskite Semiconductors. Chemistry of Materials. https://doi.org/10.1021/acs.chemmater.5b04231
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