Effects of SO2 and I2 on the Photoluminescence of Oxidized Porous Silicon

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The photoinduced visible light emission from lightly oxidized porous silicon can be reversibly quenched by both sulfur dioxide molecules and iodine molecules. Possible mechanisms for these processes are compared to the better understood mechanism for Brönsted base quenching of porous silicon photoemission. Supporting evidence was obtained through infrared spectroscopy, electron paramagnetic resonance spectroscopy, and surface chemistry. The feasibility of fashioning a SO2 sensor using oxidized porous silicon is also discussed.

Original languageEnglish (US)
Pages (from-to)1659-1664
Number of pages6
JournalChemistry of Materials
Issue number7
StatePublished - Jul 1997

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry


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