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

Jing Wang, Xinglong Wu, Tinghui Li, Paul K. Chu

    Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

    4 Citations (Scopus)

    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.
    Original languageEnglish
    Pages (from-to)17-20
    JournalScripta Materialia
    Volume76
    DOIs
    Publication statusPublished - Apr 2014

    Research Keywords

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

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