Role of intrinsic defects and impurities in forming the optical characteristics of ZnWO4 and CdWO4 crystals |
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| Authors: | L N Limarenko Yu V Zorenko M M Batenchuk Z T Moroz M V Pashkovskii I V Konstankevich |
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| Institution: | (1) Ivan Franko Lvov State University, Ukraine;(2) Institute of Applied Physics of Ivan Franko Lvov State University, 49 General Chuprynka Str., 290044 Lvov, Ukraine |
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| Abstract: | We analyze the optical characteristics of crystals within the framework of a model representation that presupposes the entry
of the background impurity of iron ions in two valence states, Fe3+ and Fe2+, into regular lattice nodes. The spectral manifestation of intrinsic defects of vacancy-type structure depending on the conditions
of crystal growth and heat treatment is comprehensively investigated. With allowance for the specific features of the technology
applied, we have tested the technique suggested in scientific periodicals for bleaching ZnWO4 and CdWO4 crystals by doping with nonisovalent ions, in particular, with Sb and Ag impurities.
Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 67, No. 2, pp. 211–216, March–April, 2000.
The work was carried out with support from INTAS-UKRAINE within the framework of the project INTAS-UA-95-0166. |
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| Keywords: | absorption impurity defect vacancy tungstates scintillators |
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