TITLE

X-ray excited luminescence of cuprous iodide single crystals: On the nature of red luminescence

AUTHOR(S)
Pan Gao; Mu Gu; Xiao-Lin Liu; Bo Liu; Shi-Ming Huang
PUB. DATE
November 2009
SOURCE
Applied Physics Letters;11/30/2009, Vol. 95 Issue 22, p221904
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The x-ray excited luminescence spectra of different quality CuI crystals were measured. The prevailing blue luminescence and the unusual red luminescence were found at the same time. The relative intensity of these two luminescence peaks was different because of the change of defect concentration in crystals. By comparing the spectra of CuI crystals before and after annealing in vacuum, air or iodine vapors, the origin of the red luminescence in the as-grown crystals was ascribed to the presence of iodine vacancy, as confirmed by the energy dispersive x-ray analysis.
ACCESSION #
45610528

 

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