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Band-gap engineering for removing shallow traps in rare-earth Lu3Al5O12garnet scintillators using Ga3+doping
Open accessAbstract
We employ a combination of first-principles calculations and optical characterization experiments to explain the mechanism by which Ga${}^{3+}$ doping prevents the trapping of free carriers due to shallow traps in RE${}_{3}$Al${}_{5}$O${}_{12}$ garnet scintillators (where RE represents a $3+$ rare-earth cation). Specifically, we confirm that Ga${}^{3+}$ doping does not reduce the defect concentration (defect engineering), but rather leads to shifts in the valence and conduction bands such that the energy level of shallow defects is no longer in the forbidden gap where electrons can be trapped (band-gap engineering).
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Cites
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Cited by
Recent R&D Trends in Inorganic Single‐Crystal Scintillator Materials for Radiation Detection
Nikl, M., & Yoshikawa, A. (2015) · Advanced Optical Materials · doi:10.1002/adom.201400571 · Cited by 851
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Metadata
- Authors
- Fasoli, M., Vedda, A., Nikl, M., Jiang, C., Uberuaga, B. P., Andersson, D. A., McClellan, K. J., & Stanek, C. R.
- Venue
- Physical Review B
- Publisher
- American Physical Society (APS)
- Published
- 2011-08-26
- Volume
- 84
- Issue
- 8
- ISSN
- 1098-0121 (ISSN-L)
- 1550-235X
- OpenAlex
- W2039819400
- Cited by
- 337
- References
- 13
- FWCI
- 20.53
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Fasoli, M., Vedda, A., Nikl, M., Jiang, C., Uberuaga, B. P., Andersson, D. A., McClellan, K. J., & Stanek, C. R. (2011). Band-gap engineering for removing shallow traps in rare-earth Lu3Al5O12garnet scintillators using Ga3+doping. Physical Review B. https://doi.org/10.1103/physrevb.84.081102
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