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Intense red upconversion luminescence from Tm3+/Yb3+ codoped transparent glass ceramic
Wei Xu1, Jianmin Chen, Peng Wang
1Condensed Matter Science and Technology Institute, Harbin Institute of Technology, Harbin 150001, China.
Optics Letters
|August 3, 2012
Summary
Researchers developed a new transparent glass ceramic doped with thulium (Tm3+) and ytterbium (Yb3+). Thermal treatment enhanced red luminescence by strengthening cross-relaxation, leading to a nearly monochromatic red emission.
Area of Science:
- Materials Science
- Nanotechnology
- Luminescence Spectroscopy
Background:
- Transparent glass ceramics offer unique optical properties.
- Rare-earth ion doping enables efficient light emission.
- Controlling energy transfer processes is crucial for luminescence enhancement.
Purpose of the Study:
- To prepare Tm3+/Yb3+ codoped transparent glass ceramic.
- To investigate the luminescence properties after thermal treatment.
- To understand the role of cross-relaxation in luminescence enhancement.
Main Methods:
- Synthesis of β-PbF2 nanocrystal-containing glass ceramic.
- Thermal treatment for nanocrystal formation and property tuning.
- Luminescence spectroscopy and decay curve analysis.
- Judd-Ofelt analysis for optical property evaluation.
Main Results:
- Successfully prepared Tm3+/Yb3+ codoped transparent glass ceramic.
- Observed significant quenching of Tm3+ emission due to cross-relaxation.
- Achieved strong enhancement of 700 nm luminescence (Tm3+:3F2,3→3H6).
- Reported a nearly monochromatic red luminescence band.
Conclusions:
- Thermal treatment effectively tunes the luminescence of Tm3+/Yb3+ doped glass ceramics.
- Strengthened cross-relaxation is a key mechanism for luminescence enhancement.
- The developed material shows potential for applications requiring monochromatic red light emission.
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