Compositional dependences on the mechanism of upconversion in Nd(3+)/Tm(3+) co-doped chalcohalide glasses
SCIE
SCOPUS
- Title
- Compositional dependences on the mechanism of upconversion in Nd(3+)/Tm(3+) co-doped chalcohalide glasses
- Authors
- Zhang, JH; Heo, J; Zhao, XJ; Chung, W
- Date Issued
- 2011-06
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- Mechanisms of the compositional dependence of blue emission from Nd3+/Tm3+ co-doped Ge-Ga-S-CsBr chalcohalide glasses were investigated. The blue upconversion emissions (centered at 475 nm) due to the Tm3+: (1)G(4) -> H-3(6) transition decreased as the CsBr/Ga ratio in glasses while the other upconversion emissions from the Nd3+ ions increased. Changes in the local environment of rare-earth ions incurred by the CsBr addition significantly increased the excited state absorption within Nd3+ ions. This resulted in the decrease in the Nd3+ -> Tm3+ energy transfer rates that led to the large decrease in blue upconversion emission. (C) 2010 Elsevier B.V. All rights reserved.
- Keywords
- Blue upconversion; Chalcohalide glass; Nd3+; Tm3+; Energy transfer; CALCIUM ALUMINATE GLASSES; ENERGY-TRANSFER; CHALCOGENIDE GLASSES; EMISSION PROPERTIES; TELLURITE GLASSES; TM3+; LUMINESCENCE; NANOCRYSTALS; SOLUBILITY; CERAMICS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/17215
- DOI
- 10.1016/J.JNONCRYSOL.2010.12.019
- ISSN
- 0022-3093
- Article Type
- Article
- Citation
- JOURNAL OF NON-CRYSTALLINE SOLIDS, vol. 357, no. 11, page. 2421 - 2423, 2011-06
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