Optical and thermal spectroscopy of vanadium-doped CdTe and related photorefractive effect

  • E. Rzepka
  • , A. Aoudia
  • , M. Cuniot
  • , A. Lusson
  • , Y. Marfaing
  • , R. Triboulet
  • , G. Brémond
  • , G. Marrakchi
  • , K. Cherkaoui
  • , M. C. Busch
  • , J. M. Koebel
  • , M. Hage-Ali
  • , P. Siffert
  • , J. Y. Moisan
  • , P. Gravey
  • , N. Wolffer
  • , O. Moine

Research output: Contribution to journalArticlepeer-review

Abstract

The energy level diagram of substitutional vanadium in CdTe (and also Cd0.96Zn0.04Te) has been investigated by using a variety of optical and thermal spectroscopy techniques: optical absorption, photoconductivity, photoluminescence, deep level optical spectroscopy, DLTS and thermally stimulated current (PICTS). This study has led to set the V2+/V3+ level at 0.95 eV below the conduction band with an optical photoionization threshold at 1.03 eV. Two-wave mixing experiments were used to evaluate the photorefractive properties. Gain coefficients in excess of 10 cm-1 have been measured at λ = 1.32 μm with applying a 40 Hz AC electric field.

Original languageEnglish
Pages (from-to)244-248
Number of pages5
JournalJournal of Crystal Growth
Volume138
Issue number1-4
DOIs
Publication statusPublished - 2 Apr 1994
Externally publishedYes

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