Structure and properties of electronic and hole centers in CsBr from theoretical calculations
Journal Article
·
· Journal of Physics: Condensed Matter, 27(24):245501
The electronic structure, geometry, diffusion barriers and optical properties of fundamental defects of CsBr are calculated using hybrid functional DFT and TD- DFT methods. The B3LYP functional with a modified exchange contribution has been used in an embedded cluster scheme to model the structure and spectroscopic properties of self-trapped triplet exciton, interstitial Br atoms and ions, self-trapped holes and Br vacancies. The calculated migration barriers and positions of maxima of optical absorption bands are in good agreement with experiment, justifying the obtained defect geometries. The o*-center triplet exciton luminescence energy is also accurately calculated.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1203867
- Report Number(s):
- PNNL-SA-108312; KC0301020
- Journal Information:
- Journal of Physics: Condensed Matter, 27(24):245501, Journal Name: Journal of Physics: Condensed Matter, 27(24):245501
- Country of Publication:
- United States
- Language:
- English
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