Related Experiment Video
Updated: Jan 10, 2026
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20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
Published on: July 12, 2017
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Bi3+-Related Multimode Emission in Garnet: A First-Principles Study
Bin Jiang1, Qing Liu1, Fengfeng Chi2
1College of Electronic and Information Engineering, West Anhui University, Lu'an 237012, China.
Materials (Basel, Switzerland)
|November 27, 2025
Summary
This study investigates multiband emissions in bismuth-doped Y3Ga(Al)5O12 phosphors. Calculations reveal violet emission from Bi3+ at Y sites, while visible emissions originate from Bi3+ dimers, not charge transfer at Ga/Al sites.
Area of Science:
- Materials Science
- Solid-State Chemistry
- Luminescence
Background:
- Bismuth-doped garnets are promising phosphors.
- Understanding emission mechanisms is crucial for material optimization.
Purpose of the Study:
- Investigate multiband emissions in Bi-doped Y3Ga(Al)5O12.
- Clarify the origins of violet and visible emissions.
- Analyze the relationship between coordination environment and luminescence.
Main Methods:
- Systematic first-principles calculations.
- Formation energy calculations.
- Vacuum-referred binding energy (VRBE) model.
Main Results:
- Violet emission attributed to 3P1-1S0 transition of Bi3+ at Y sites.
- Visible emissions linked to Bi3+ dimers, not MMCT at Ga/Al sites.
- VRBE model used to determine Bi3+ energy levels.
Conclusions:
- Bismuth-doped garnet luminescence is site-dependent.
- Coordination environment significantly impacts emission properties.
- Findings aid in optimizing luminescent materials.
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