COMMENTS ON THE THEORY OF AMORPHOUS SEMICONDUCTORS.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

The author presents comments on the nature of the intrinsic band tails in pure amorphous silicon, the Lloyd model, the influence of shallow impurity levels on band tails, the effect of disorder on deep levels, the question of whether excitons exist in amorphous semiconductors, the conductivity problem, the mobility edge problem, and optical absorption. New results are presented concerning the Lloyd model, shallow and deep impurity or defect levels, and excitons. In particular, it is concluded that excitons continue to exist as bound states only when the exciton lies below a Lifshitz limit; otherwise they survive only as resonances.

Original languageEnglish (US)
Title of host publicationUnknown Host Publication Title
EditorsR.K. Kalia, P. Vashishta
PublisherNorth-Holland
Pages125-138
Number of pages14
ISBN (Print)0444006958
StatePublished - Dec 1 1982
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • Cite this

    Cohen, M. H. (1982). COMMENTS ON THE THEORY OF AMORPHOUS SEMICONDUCTORS. In R. K. Kalia, & P. Vashishta (Eds.), Unknown Host Publication Title (pp. 125-138). North-Holland.