Optical properties of CdSe quantum dots in silicate glasses
SCIE
SCOPUS
- Title
- Optical properties of CdSe quantum dots in silicate glasses
- Authors
- Xu, K; Liu, C; Chung, WJ; Heo, J
- Date Issued
- 2010-10-01
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- CdSe quantum dots (QDs) were precipitated in silicate glasses under various durations and temperatures of heat-treatment. Absorption and photoluminescence (PL) spectra of the QDs showed the quantum confinement effect from CdSe QDs. When the glass was heat-treated for 10 h, estimated average QD sizes increased from 5.2 nm when the glass was heat-treated at 490 degrees C and to 6.9 nm when it was treated at 500 degrees C. When the glass was heat-treated at 480 degrees C, estimated average QD sizes were 4.9 nm after 20 h and 5.3 nm after 30 h. The PL peak position was independent of the excitation wavelengths: this result indicates that the size distribution of CdSe QDs was narrow. (C) 2010 Elsevier B.V. All rights reserved.
- Keywords
- Quantum dots; Quantum confinement; Photoluminescence; Glasses; DOPED GLASSES; NANOCRYSTALS; MICROCRYSTALLITES; EMISSION; GAIN
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/25141
- DOI
- 10.1016/J.JNONCRYSOL.2010.05.097
- ISSN
- 0022-3093
- Article Type
- Article
- Citation
- JOURNAL OF NON-CRYSTALLINE SOLIDS, vol. 356, no. 44, page. 2299 - 2301, 2010-10-01
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