Published January 2005 | Version v1
Journal article Metadata-only

Transformation of valence states and luminescence of chromium ions in the YAG:Cr, Mg and GGG:Cr, Mg single crystalline films

Creators

  • 1. Faculty of Electronics, Ivan Franko National University of Lviv, 107 Tarnavskogo St., Lviv 79017 (Ukraine)
  • 2. Institute for Materials SRC ''Carat'', 202 Stryjska St., Lviv 79031 (Ukraine)
  • 3. Institute for Telecommunication, Radioelectronics and Electronic Engineering, Lviv Polytechnic National University, 12 Bandera St., Lviv 79013 (Ukraine)

Description

Peculiarities of absorption spectra and recombination luminescence of Y3Al5O12 (YAG) and Cd3Ga5O12 (GGG) single crystalline films co-doped with chromium and magnesium have been studied. The change of impurities concentration and annealing of samples in the reducing atmosphere have an influence on absorption in the visible and UV range. Using the results on absorption coefficient measurements in the band of 480 nm and in the absorption bands of Cr3+ ions, it was determined, that near 50% of the chromium ions located in octahedral sites are in the Cr4+ state in films with high chromium concentration. The investigation of thermostimulated luminescence confirms the existence of Cr2+ trap centres in the irradiated films caused by the magnesium dopant. (copyright 2005 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1002/pssc.200460231

Additional details

Identifiers

DOI
10.1002/pssc.200460231;

Publishing Information

Journal Title
Physica Status Solidi. C, Conferences
Journal Volume
2
Journal Issue
1
Journal Page Range
p. 551-554
ISSN
1610-1634

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
36024807
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ABSORPTION SPECTRA; ALUMINIUM OXIDES; CHROMIUM ADDITIONS; CHROMIUM IONS; DOPED MATERIALS; FERRITE GARNETS; FILMS; GLOW CURVE; MAGNESIUM ADDITIONS; MONOCRYSTALS; RECOMBINATION; THERMOLUMINESCENCE; ULTRAVIOLET SPECTRA; VISIBLE SPECTRA; YTTRIUM COMPOUNDS
Descriptors DEC
ALLOYS; ALUMINIUM COMPOUNDS; CHALCOGENIDES; CHARGED PARTICLES; CHROMIUM ALLOYS; CRYSTALS; EMISSION; IONS; LUMINESCENCE; MAGNESIUM ALLOYS; MATERIALS; MINERALS; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; PHOTON EMISSION; SPECTRA; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
With 4 figs., 1 tab., 10 refs.. SICI: 1610-1634(200501)2:1<551::AID-PSSC200460231>3.0.TX;2-R