Excitation mechanism of the Cr3+luminescence center in SrTiO3
作者:
Amal K. Ghosh,
R. R. Addiss,
R. B. Lauer,
期刊:
Journal of Applied Physics
(AIP Available online 1973)
卷期:
Volume 44,
issue 8
页码: 3798-3800
ISSN:0021-8979
年代: 1973
DOI:10.1063/1.1662849
出版商: AIP
数据来源: AIP
摘要:
From thermoluminescence (TL), thermally stimulated currect (TSC), and photoluminescence and photoconductivity kinetic response measurements, the excitation mechanism of the Cr3+luminescence center in SrTiO3is explored. Based primarily on the strong correlation between TSC and TL, it is concluded that the dominant excitation mechanism is a charge‐transfer process, although a contribution from a resonance‐transfer process cannot be completely ruled out. The superficial differences which exist between photoluminescence and photoconductivity kinetics can be accounted for completely within the framework of a charge‐transfer model by recognizing that the photocurrent is controlled primarily by the electron traffic through the conduction band, while the photoluminescence is controlled primarily by the hole traffic through the luminescence center.
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