PL and ESR of Gd3+ in LaMgAl11O19 phosphors
- Authors
- Singh, Vijay; Singh, N.; Pathak, M. S.; Watanabe, S.; Rao, T. K. Gundu; Singh, Pramod K.; Kwon, Young-Wan
- Issue Date
- 3월-2018
- Publisher
- SPRINGER
- Citation
- JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, v.29, no.6, pp.4632 - 4638
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
- Volume
- 29
- Number
- 6
- Start Page
- 4632
- End Page
- 4638
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/76801
- DOI
- 10.1007/s10854-017-8414-0
- ISSN
- 0957-4522
- Abstract
- LaMgAl11O19 doped with different concentrations of gadolinium phosphors were synthesized by combustion and characterized using X-Ray diffraction to identify the crystalline phase. Photoluminescence studies on the sample showed emission peaks at 313 and 306 nm with lambda(exi) = 273 nm corresponding to the P-6 (J) -> S-8(7/2) transitions of Gd3+ ions. In phosphors with low dopant concentrations, dominant electron spin resonance lines are observed with g (eff) similar to 1.96, 1.98, 4.2, and 6.0. With increasing concentrations, the spectrum appears to be U-shaped, and main lines are seen at g (eff) similar to 1.98, 2.04, 2.8, 4.1 and 6.2. Distortions in the immediate environment of Gd3+ ions lead to relatively strong crystal fields and the appearance of lines in the low field region of the spectrum.
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Collections - Graduate School > KU-KIST Graduate School of Converging Science and Technology > 1. Journal Articles
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