Germanosilicate glasses containing PbSe quantum dots for mid-infrared luminescence
SCIE
SCOPUS
- Title
- Germanosilicate glasses containing PbSe quantum dots for mid-infrared luminescence
- Authors
- Wang, J; Zhang, JH; Liu, C; Heo, J; Kwon, YK
- Date Issued
- 2016-01-01
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- Lead selenide quantum dots (QDs) were precipitated in germanosilicate glasses to investigate the effect of GeO2 content on the precipitation and optical properties. The absorption and photoluminescence (PL) bands red-shifted strongly as GeO2 concentration increased. After heat-treatment at 470 degrees C for 10 h, the first excitonic absorption bands red-shifted from 801 nm to 2593 nm as GeO2 content increased from 0 to 40 mol%, and thus PL at 2619 nm was achieved. The corresponding average QD diameters were 2.48-12.54 nm. The precipitation of large PbSe QDs resulted from the enhancement of diffusion with the increase of GeO2 concentration, and is the main reason for these red-shifts. (C) 2015 Elsevier B.V. All rights reserved.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/36145
- DOI
- 10.1016/J.JNONCRYSOL.2015.04.004
- ISSN
- 0022-3093
- Article Type
- Article
- Citation
- JOURNAL OF NON-CRYSTALLINE SOLIDS, vol. 431, page. 79 - 82, 2016-01-01
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