Luminescence and photoconductivity in magnesium aluminum spinel

Pradip Bandyopadhyay, G. P. Summers

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Ultraviolet-light excitation of thermochemically reduced MgAl2O4 single crystals below room temperature produces a luminescence band with a peak at 2.69 eV. The excitation spectrum of the 2.69-eV band coincides with the broad F-center absorption band at 5.30 eV. The 2.69-eV band is also emitted in uv-stimulated glow peaks which occur at 95 and 265 K. A photoconductivity maximum is observed at 5.39 eV at temperatures above 160 K, but the band is readily bleached by uv light.

Original languageEnglish (US)
Pages (from-to)2422-2426
Number of pages5
JournalPhysical Review B
Volume31
Issue number4
DOIs
StatePublished - Jan 1 1985

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Photoconductivity
Aluminum
photoconductivity
Magnesium
spinel
magnesium
Luminescence
luminescence
aluminum
Absorption spectra
Single crystals
Temperature
color centers
ultraviolet radiation
excitation
absorption spectra
spinell
single crystals
room temperature
temperature

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

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Luminescence and photoconductivity in magnesium aluminum spinel. / Bandyopadhyay, Pradip; Summers, G. P.

In: Physical Review B, Vol. 31, No. 4, 01.01.1985, p. 2422-2426.

Research output: Contribution to journalArticle

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