1. Optical properties of CdSe quantum dots in silicate glasses
- Author
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Xu, Kai, Liu, Chao, Chung, Woon Jin, and Heo, Jong
- Subjects
- *
OPTICAL properties , *CADMIUM selenide , *QUANTUM dots , *GLASS , *PRECIPITATION (Chemistry) , *ABSORPTION , *PHOTOLUMINESCENCE - Abstract
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 10h, estimated average QD sizes increased from 5.2nm when the glass was heat-treated at 490°C and to 6.9nm when it was treated at 500°C. When the glass was heat-treated at 480°C, estimated average QD sizes were 4.9nm after 20h and 5.3nm after 30h. The PL peak position was independent of the excitation wavelengths; this result indicates that the size distribution of CdSe QDs was narrow. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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