Semiconductor Cd(S, Se) quantum dots in glasses: Size determination by low-frequency Raman scattering
- 1 April 1995
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine Part B
- Vol. 71 (4) , 547-556
- https://doi.org/10.1080/01418639508238545
Abstract
Room-temperature Stokes and anti-Stokes Raman scattering spectra have been measured in the low-energy acoustic and high-energy optical phonon region for Cd(S, Se)-doped glasses. The peaks observed in the low-frequency region were assigned to the confined acoustic eigenmodes of II-VI semiconductor nanoparticles embedded in an amorphous matrix. The size dependence of the acoustic peak positions and the relation between the size distribution and bandwidth of these peaks was derived. The size-dependent changes in the region of CdS longitudinal-optical modes were attributed to the confinement of phonons in a small nanocrystal volume.Keywords
This publication has 16 references indexed in Scilit:
- Size of Cd(S,Se) quantum dots in glasses: Correlation between measurements by high-resolution transmission electron microscopy, small-angle x-ray scattering, and low-frequency inelastic Raman scatteringJournal of Applied Physics, 1993
- Width of the excitonic absorption peak and size of CdSxSe1−x semiconductor nanocrystallitesJournal of Non-Crystalline Solids, 1992
- Low frequency inelastic light scattering from GeO2-based glass: early steps of crystallizationJournal of Non-Crystalline Solids, 1991
- Nucleation kinetic studies of a europium-doped aluminosilicate glass: Low-frequency inelastic scattering and fluorescence line narrowingPhysical Review B, 1991
- Nanocrystallites vibration modes of CdSxSe1−x semiconductors in glasses: Size determination by Raman scatteringThe Journal of Chemical Physics, 1991
- Raman scattering from quantum dots of Ge embedded in SiO2 thin filmsApplied Physics Letters, 1990
- Low-frequency raman scattering on surface vibrational modes of microcrystalsSolid State Communications, 1988
- Low-Frequency Surface-Enhanced Raman Scattering from Fractal Vibrational Modes Localized at the NaCl-Na Colloid InterfaceEurophysics Letters, 1987
- The effects of microcrystal size and shape on the one phonon Raman spectra of crystalline semiconductorsSolid State Communications, 1986
- Vibration Eigenmodes and Size of Microcrystallites in Glass: Observation by Very-Low-Frequency Raman ScatteringPhysical Review Letters, 1986