All-silicon solid films with highly efficient and tunable full-color photoluminescence

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

3 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)17-20
Journal / PublicationScripta Materialia
Volume76
Publication statusPublished - Apr 2014

Abstract

Silicon nanocrystals with the most probable diameter of 2 nm are surface passivated by glycerol and deposited on porous silicon (PS) substrate with intrinsic red photoluminescence. Tunable full-color emission is observed from this composite film and the quantum efficiency varies from 17% to 28% under different excitation wavelengths. Spectral analysis reveals that the full-color emission arises from combined quantum confinement in the silicon and PS nanocrystals with glycerol passivation. The nanostructured all-silicon film is robust and compatible with microelectronic processing. © 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Research Area(s)

  • Glycerol passivation, Quantum confinement effect, Si nanocrystals, Tunable photoluminescence