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Luminescence in Li2BaP2O7
L R Hatwar1, S P Wankhede2, S V Moharil3
1Department of Physics, B.M. College of Engineering, Nagpur, India.
Luminescence : the Journal of Biological and Chemical Luminescence
|October 30, 2014
Summary
Eu(2+)-activated Li2BaP2O7 shows strong thermoluminescence (TL) and optically stimulated luminescence (OSL). Its TL output is double that of LiF-TLD 100, indicating potential for radiation dosimetry applications.
Area of Science:
- Solid State Physics
- Luminescence Materials
- Radiation Detection
Background:
- Luminescence phenomena are crucial for radiation detection and dosimetry.
- Lithium-based phosphors are investigated for their dosimetric properties.
- Doping with rare-earth ions can significantly alter luminescence characteristics.
Purpose of the Study:
- To investigate the photo-, thermo-, and optically stimulated luminescence of Li2BaP2O7 doped with Eu(2+)/Cu(+).
- To evaluate the potential of these materials as phosphors for radiation dosimetry.
Main Methods:
- Synthesis of Li2BaP2O7:Eu(2+)/Cu(+) phosphors.
- Characterization of luminescence properties using photo-, thermo-, and optically stimulated luminescence techniques.
- Comparison with standard dosimetric materials like LiF-TLD 100 and Al2O3:C.
Main Results:
- The Eu(2+)-activated sample exhibited strong thermoluminescence (TL), approximately twice that of LiF-TLD 100.
- Optically stimulated luminescence (OSL) sensitivity was found to be about 20% of commercial Al2O3:C.
- Cu(+) co-doping effects on luminescence were also investigated (though not detailed in the abstract).
Conclusions:
- Li2BaP2O7:Eu(2+) demonstrates promising thermoluminescence properties for radiation dosimetry.
- Further research is warranted to optimize OSL performance and explore co-doping effects.
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