Luminescence properties of CsI:Tl crystals codoped with Eu
In investigating chemical approach for reducing the afterglow from Csl:TI, we were discovered es that a particularly effective ion for such afterglow suppression is Eu²⁺. We have extensively studied the effect of the Eu codopant on the luminescence from crystals of Csl:TI. Numerous single crystal...
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| Date: | 2005 |
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| Main Authors: | , , , , , , |
| Format: | Article |
| Language: | English |
| Published: |
НТК «Інститут монокристалів» НАН України
2005
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| Series: | Functional Materials |
| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/138874 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Luminescence properties of CsI:Tl crystals codoped with Eu / V.V. Nagarkar, E.E. Ovechkina, S.R. Miller, V. Gaysinskiy, C. Brecherb, A. Lempickib, R.H. Bartramc // Functional Materials. — 2005. — Т. 12, № 4. — С. 645-651. — Бібліогр.: 13 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Summary: | In investigating chemical approach for reducing the afterglow from Csl:TI, we were discovered es that a particularly effective ion for such afterglow suppression is Eu²⁺. We have extensively studied the effect of the Eu codopant on the luminescence from crystals of Csl:TI. Numerous single crystals of Csl:TI,Eu were grown by the Bridgman technique in evacuated quartz ampoules at concentrations between 0.05 and 0.5 mole percent. Three
different materials were investigated as sources for the codopant: two variants of Eul₂ and elemental Eu metal. X-ray excited spectra revealed the presence of an additional peak at
about 460 nm, characteristic of Eu²⁺ ions in the Csl lattice. The decay traces of the specimens reveal substantial variation in afterglow suppression, and possible reasons for these differences are examined and discussed. |
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