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Influence of Cu^{2+} and Cu^{3+} Cations on the Optical Properties of Bi_{12}SiO_{20}:Cu

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Petkova P., Petkov S., Tacheva J.
Acta Physica Polonica A
|
2012
|
vol. 121
|
issue 1
149-151
EN
The absorption spectrum of Bi_{12}SiO_{20}:Cu is measured in the spectral region 0.195-2.95 eV. The validity of the Urbach rule (2.08-2.95 eV) has been also verified. The photochromic effect of these samples in far IR region is investigated. The energy level diagram of Cu^{3+} cations in Bi-octahedrons is presented.
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