Specific features of photoluminescence centers in CsBr:Eu²⁺ crystals grown from melt
Specific formation features of isolated dipole centers (IDC) Eu²⁺-Vcs (impurity-cationic vacancy) and aggregate centers (AC) of photoluminescence (PL) in CsBr:Eu2+ crystals have been studied. These centers provide the PL with maxima in 435-450 nm and 490-520 nm regions. The centers causing the PL pe...
Збережено в:
| Дата: | 2004 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
НТК «Інститут монокристалів» НАН України
2004
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| Назва видання: | Functional Materials |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/139678 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Specific features of photoluminescence centers in CsBr:Eu²⁺ crystals grown from melt / Yu.V. Zorenko, R.M. Turchak, I.V. Konstankevich // Functional Materials. — 2004. — Т. 11, № 4. — С. 707-709. — Бібліогр.: 10 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | Specific formation features of isolated dipole centers (IDC) Eu²⁺-Vcs (impurity-cationic vacancy) and aggregate centers (AC) of photoluminescence (PL) in CsBr:Eu2+ crystals have been studied. These centers provide the PL with maxima in 435-450 nm and 490-520 nm regions. The centers causing the PL peaked at 490-520 nm have been found to be formed within a narrow Eu²⁺ concentration range (0.01 to 0.1 mol.%) and at temperatures up to 180-200°C. It has been supposed that in the CsBr:Eu²⁺ crystals, besides of the IDC responsible for the PL peaked at 440 nm, several AC types can be observed, in particular, CsEuBr₃ and Cs₄EuBr₆ nanocrystals as well as EuBr₂ precipitates. |
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