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

Journal Article · Mon Nov 30 00:00:00 EST 2009 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3271174· OSTI ID:21294485

Pan, Gao; Mu, Gu; Xiaolin, Liu; Bo, Liu; Shiming, Huang ^[1]

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1. Laboratory of Waves and Microstructure Materials, Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092 (China)

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.

• OSTI ID: 21294485
• Journal Information: Applied Physics Letters, Vol. 95, Issue 22; Other Information: DOI: 10.1063/1.3271174; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANNEALING
COPPER IODIDES
IODINE
MONOCRYSTALS
PHOTOLUMINESCENCE
VACANCIES
VAPORS
X-RAY SPECTRA