The effect of temperature on photoinduced metastability in avalanche a-Se layers

A. Reznik, B. J.M. Lui, V. Lyubin, M. Klebanov, Y. Ohkawa, T. Matsubara, K. Miyakawa, M. Kubota, K. Tanioka, T. Kawai, J. A. Rowlands

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


The effect of temperature on the initiation of light-induced defects in a-Se targets of high-gain avalanche rushing photoconductor (HARP) camera tubes was studied. At room temperature, avalanche a-Se was found to be subject to both reversible and irreversible photodarkening. At 35 °C, the irreversible photodarkening component was completely absent. This result is attributed to the instantaneous annealing of light-induced metastable coordination defects at elevated temperatures. A model for the formation of permanent crystalline areas at low temperatures via transition states associated with light-induced metastable defects is proposed.

Original languageEnglish
Pages (from-to)1595-1598
Number of pages4
JournalJournal of Non-Crystalline Solids
Issue number9-20 SPEC. ISS.
StatePublished - 15 Jun 2006


  • Amorphous semiconductors
  • Defects
  • Photoinduced effects

ASJC Scopus subject areas

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


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