Visible photoluminescence from silicon nanopowders produced by silicon evaporation in a high-power electron beam
- 1 October 2004
- journal article
- Published by Pleiades Publishing Ltd in JETP Letters
- Vol. 80 (8), 544-547
- https://doi.org/10.1134/1.1846116
Abstract
Silicon nanopowders produced by electron-beam-induced evaporation of a bulk silicon sample in an argon atmosphere are studied by the photoluminescence technique and Raman scattering spectroscopy. A photoluminescence peak in the visible region of the spectrum has been detected at room temperature in powders consisting of silicon nanocrystals. The strong short-wavelength shift of the photoluminescence peak can be attributed to the quantum size effect of electrons and holes in small silicon nanocrystals (about 2 nm). The size of silicon nanocrystals is determined by analyzing Raman spectra, and it is consistent with estimates obtained from photoluminescence data.Keywords
This publication has 8 references indexed in Scilit:
- Clear quantum-confined luminescence from crystalline silicon/SiO2 single quantum wellsApplied Physics Letters, 2004
- Raman scattering and photoluminescence from Si nanoparticles in annealed SiOx thin filmsJournal of Applied Physics, 2002
- Calculations on the size effects of Raman intensities of silicon quantum dotsPhysical Review B, 2002
- Synthesis and characterization of aerosol silicon nanocrystal nonvolatile floating-gate memory devicesApplied Physics Letters, 2001
- Quantum Confinement in Amorphous Silicon Quantum Dots Embedded in Silicon NitridePhysical Review Letters, 2001
- Improved one-phonon confinement model for an accurate size determination of silicon nanocrystalsJournal of Applied Physics, 1999
- Breakdown of the-Conservation Rule in Si NanocrystalsPhysical Review Letters, 1998
- Visible photoluminescence in Si+-implanted silica glassJournal of Applied Physics, 1994