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Synthesis and Near-Infrared Emission of Yb-Doped Cs2AgInCl6 Double Perovskite Microcrystals and Nanocrystals
Abstract
Cs 2 AgInCl 6 double perovskite (DP) is a direct band gap, stable, and environmentally benign material with a three-dimensional perovskite structure. However, the band gap (∼3.3 eV) is too wide for optoelectronic applications in the near-infrared (NIR) region. To achieve optical functionality in the NIR window, we have doped Yb 3+ in both microcrystals and colloidal nanocrystals of Cs 2 AgInCl 6 DPs. Our Yb-doped Cs 2 AgInCl 6 DP microcrystals and nanocrystals show NIR emission at ∼994 nm (1.24 eV), whereas the band gap of the hosts is in the UV region. Therefore, the Yb-emission does not suffer from self-absorption. The microcrystals exhibit a single-exponential decay with 2.7 ms long lifetime corresponding to 2 F 5/2 → 2 F 7/2 transition of Yb 3+ f electrons. The nanocrystals show biexponential decay (3 ms and 749 μs), probably because of the proximity of Yb to the surface of nanocrystals. Interestingly, NIR emission and perovskite structure of samples are stable for >3 months in ambient conditions for future optoelectronic applications.
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Cited by
Rare-earth-containing perovskite nanomaterials: design, synthesis, properties and applications
Zeng, Z., Xu, Y., Zhang, Z., Gao, Z., Luo, M., Yin, Z., Zhang, C., Xu, J., Huang, B., Luo, F., et al. (2020) · Chemical Society Reviews · doi:10.1039/c9cs00330d · Cited by 422
Bi3+‐Er3+ and Bi3+‐Yb3+ Codoped Cs2AgInCl6 Double Perovskite Near‐Infrared Emitters
Arfin, H., Kaur, J., Sheikh, T., Chakraborty, S., & Nag, A. (2020) · Angewandte Chemie International Edition · doi:10.1002/anie.202002721 · Cited by 359
Self-citationAn 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
- Mahor, Y., Mir, W. J., & Nag, A.
- Venue
- The Journal of Physical Chemistry C
- Publisher
- American Chemical Society (ACS)
- Published
- 2019-06-06
- Volume
- 123
- Issue
- 25
- Pages
- 15787-15793
- ISSN
- 1932-7447 (ISSN-L)
- 1932-7455
- OpenAlex
- W2951211471
- Cited by
- 185
- References
- 0
- FWCI
- 7.67
- Type
- journal article
- Language
- en
- Open access
- closed
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- Mahor, Y., Mir, W. J., & Nag, A. (2019). Synthesis and Near-Infrared Emission of Yb-Doped Cs2AgInCl6 Double Perovskite Microcrystals and Nanocrystals. The Journal of Physical Chemistry C. https://doi.org/10.1021/acs.jpcc.9b02456
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