Synthesis of nano-ZnS modified porous Si with white light photoluminescence properties

Ling Xu*, Kok Wai CHEAH, Hoi Lam TAM, King Fai Li, Yu Zhang, Yi Ma, Xinfan Huang, Kunji Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Porous silicon (PS) was modified with nano-ZnS using a chemical method. Scanning electron microscopy (SEM) images show that after the modification, smaller nano-ZnS particles 10-50 nm in diameter appear in the PS host. The formation of nano-ZnS in PS was also confirmed by energy dispersive spectroscopy (EDS). The EDS results revealed that the same ratio of Zn and S atoms existed in PS after the deposition of ZnS. Photoluminescence spectra of nano-ZnS/PS structures exhibited a distinct shift of emission from red to blue with increasing ZnS coverage. With appropriate doping, it is possible to obtain white light photoluminescence from nano-ZnS/PS.

Original languageEnglish
Pages (from-to)4466-4468
Number of pages3
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
Volume41
Issue number7 A
DOIs
Publication statusPublished - Jul 2002

Scopus Subject Areas

  • Engineering(all)
  • Physics and Astronomy(all)

User-Defined Keywords

  • Chemical method
  • Nano-ZnS
  • Porous silicon
  • White light photoluminescence

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