Optical and thermal reducing of photochromic effect in Al doped Bi₁₂SiO₂₀ crystals
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Optical and thermal reducing of photochromic effect in Al doped Bi₁₂SiO₂₀ crystals
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| Creator |
Dyachenko, A.A.
Panchenko, T.V. |
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| Subject |
Characterization and properties
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| Description |
Results of experimental studying the processes of reversible optical and thermal reducing of the photochromic effect in Bi₁₂SiO₂₀:Al crystals are presented. It is shown that the optical reducing is the most effective in the region hν = 0.5 - 2 eV and at hν > 1.4 eV the reducing process passes to excitation of the photochromic effect. The thermal reducing is held in two steps with the ultimate bleaching at Th = 152 and 208 K. It is suggested the model of electron transitions such as impurity level - band , where nonstoichiometric ions Bi⁵⁺Si (donors) and ions Al³⁺Si (acceptors) are responsible for impurity levels. Besides intracenter transitions in complexes [AlSiO₄] make a contribution to the processes of exiting and reducing of the photochromic effect.
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| Date |
2017-06-12T12:15:12Z
2017-06-12T12:15:12Z 2016 |
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| Type |
Article
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| Identifier |
Optical and thermal reducing of photochromic effect in Al doped Bi₁₂SiO₂₀ crystals / A.A. Dyachenko, T.V. Panchenko // Functional Materials. — 2016. — Т. 23, № 2. — С. 197-201.. — Бібліогр.: 16 назв. — англ.
1027-5495 DOI: dx.doi.org/10.15407/fm23.02.197 http://dspace.nbuv.gov.ua/handle/123456789/120608 |
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| Language |
en
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| Relation |
Functional Materials
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| Publisher |
НТК «Інститут монокристалів» НАН України
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