Quantum size effects on photoluminescence in ultrafine Si particles
- 11 June 1990
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 56 (24) , 2379-2380
- https://doi.org/10.1063/1.102921
Abstract
Visible photoluminescence was observed in ultrafine Si particles at room temperature. Transmission electron microscopy revealed that Si microcrystallites were embedded in a Si oxide matrix for the sample which emitted the light. The emission energy depended on crystallite size in the range from 2.8 to 5 nm. The inverse relation between emission energy and the square of the crystallite size indicates that carrier confinement in the Si microcrystallites causes this photoluminescence phenomenon.Keywords
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