Chemiluminescence of anodized and etched silicon: Evidence for a luminescent siloxene-like layer on porous silicon

Paul McCord, Shueh Lin Yau, Allen J. Bard

Research output: Contribution to journalArticlepeer-review

188 Scopus citations

Abstract

Treatment of anodized or chemically etched silicon ("porous silicon") with dilute nitric acid or persulfate solution results in weak chemiluminescence in the visible region. Concentrated nitric acid reacts violently with porous Si produced by anodization with a bright flash of light. The fact that similar reactions occur with siloxene (Si6H 6O3) prepared from CaSi2 suggests that the visible emission seen with porous Si can be attributed to this substance.

Original languageEnglish
Pages (from-to)68-69
Number of pages2
JournalScience
Volume257
Issue number5066
DOIs
StatePublished - 1992

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