Optical absorption in amorphous semiconductors

M. H. Cohen, C. M. Soukoulis, E. N. Economou

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


By combining our recent results on the electronic structure for disordered systems, and the constancy of the matrix elements, we show that the Urbach tail arises from states localized by fluctuations on single sites and not from Halperin-Lax tail states.

Original languageEnglish (US)
Pages (from-to)171-174
Number of pages4
JournalJournal of Non-Crystalline Solids
Issue numberPART 1
StatePublished - Dec 2 1985
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry


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