Mid-infrared luminescence from Sn-modified PbSe quantum dots in silicate glasses
SCIE
SCOPUS
- Title
- Mid-infrared luminescence from Sn-modified PbSe quantum dots in silicate glasses
- Authors
- Zhang, JH; Liu, C; Heo, J
- Date Issued
- 2016-01-01
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- Infrared photoluminescence (PL) properties of Sn-modified PbSe quantum dots (QDs) in silicate glass were investigated. The QDs' sizes were controlled by changing the heat treatment temperatures. The longest absorption peak from Sn-modified PbSe QDs was centered at 2590 nm, and the PL band extended to 2650 nm. X-ray diffraction peaks indicated that the PbSe QDs formed in the glass matrix although low Sn content resulted in no obvious difference between PbSe QDs and Sn-modified PbSe QDs. Sn was found in QDs that proves the incorporation of Sn into PbSe QDs. The proposed composition of the Sn-modified PbSe QDs was Pb0.92Sn0.08Se with a band gap of similar to 0.13 eV; the small amount of Sn changed the energy structure of QDs, narrowed the band-gap, and increased the PL emission wavelength. (C) 2015 Elsevier B.V. All rights reserved.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/36144
- DOI
- 10.1016/J.JNONCRYSOL.2015.04.010
- ISSN
- 0022-3093
- Article Type
- Article
- Citation
- JOURNAL OF NON-CRYSTALLINE SOLIDS, vol. 431, page. 93 - 96, 2016-01-01
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