Optical Properties of CdS Microcrystallite-Doped SiO2 Glass Thin Films
- 1 October 1990
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 29 (10R)
- https://doi.org/10.1143/jjap.29.2111
Abstract
The optical properties of SiO2 glass thin films containing CdS microcrystallites have been investigated. The thin films were deposited onto SiO2 and GaAs substrates using an rf-sputtering technique. X-ray photoelectron spectroscopy and X-ray diffraction measurement indicated that the Cd and S atoms were doped as CdS with a hexagonal system in SiO2 glass matrixes. In the optical absorption spectra, the absorption edge of the films with 18.5 at% of CdS clearly exhibited a blue shift by about 0.13 eV in comparison with that of the bulk CdS. In accordance with this result, the photoluminescence spectra of the films exhibited a blue band-edge emission at a higher energy than that of the bulk CdS. The shift to higher energy seems to be a low-dimensional quantum size effect due to confinement of electrons and holes in CdS microcrystallites.Keywords
This publication has 12 references indexed in Scilit:
- Semiconducting CdTe Microcrystalline-Doped SiO2 Glass Thin Films Prepared by Rf-SputteringJapanese Journal of Applied Physics, 1989
- Quantum size effects in optical properties of CdS-glass compositesPhysical Review B, 1988
- Observation of optical bistability in CdSXSe_1−X-doped glasses with 25-psec switching timeOptics Letters, 1987
- Quantum confinement effects of semiconducting microcrystallites in glassJournal of Applied Physics, 1987
- Wannier exciton in microcrystalsSolid State Communications, 1986
- Quantum size effect in semiconductor microcrystalsSolid State Communications, 1985
- Quantum size effects in simple colored glassPhysical Review B, 1985
- Degenerate four-wave mixing in semiconductor-doped glassesJournal of the Optical Society of America, 1983
- Further examination of the Si KLL Auger line in silicon nitride thin filmsApplications of Surface Science, 1981
- Diffraction studies of glass structureJournal of Non-Crystalline Solids, 1974