Luminescence properties and energy transfer processes in nanosized cerium doped YAG

Vladimir Pankratov; Larisa Grigorjeva; Stanislav Chernov; Tadeusz Chudoba; Witold Lojkowski

doi:10.1109/TNS.2007.915070

Luminescence properties and energy transfer processes in nanosized cerium doped YAG

Vladimir Pankratov^*
, Larisa Grigorjeva
, Stanislav Chernov
, Tadeusz Chudoba
, Witold Lojkowski

^*Corresponding author for this work

Laboratory of Spectroscopy, Institute of Solid State Physics

University of Latvia
Polish Academy of Science

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

Luminescence properties of cerium doped Y₃Al₅O ₁₂ (YAG) nanocrystals in form of nanopowders and nanoceramics have been studied. The comparative analysis of luminescence characteristics for nano- and single- crystals has been done. It was detected that an excitonic mechanism of the energy transfer from the host lattice to cerium ions does not work in nanopowders and nanoceramic. It was also shown that antisite-related and self-trapped exciton-related luminescence bands are suppressed strongly in nanopowders, and it can be excited only under certain circumstances. These bands practically disappeared in the nanoceramic samples. It was suggested that nanoparticle's surface, which is an efficient trap for excitons and charge carriers, plays the crucial role in peculiarities of luminescence characteristics in nanocrystals.

Original language	English
Article number	4545193
Pages (from-to)	1509-1513
Number of pages	5
Journal	IEEE Transactions on Nuclear Science
Volume	55
Issue number	3
DOIs	https://doi.org/10.1109/TNS.2007.915070
Publication status	Published - Jun 2008

Keywords

Nanoceramic
Nanocrystals
Scintillators
Time-resolved luminescence
Yttrium-aluminum garnet (YAG)

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10.1109/TNS.2007.915070

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title = "Luminescence properties and energy transfer processes in nanosized cerium doped YAG",

abstract = "Luminescence properties of cerium doped Y3Al5O 12 (YAG) nanocrystals in form of nanopowders and nanoceramics have been studied. The comparative analysis of luminescence characteristics for nano- and single- crystals has been done. It was detected that an excitonic mechanism of the energy transfer from the host lattice to cerium ions does not work in nanopowders and nanoceramic. It was also shown that antisite-related and self-trapped exciton-related luminescence bands are suppressed strongly in nanopowders, and it can be excited only under certain circumstances. These bands practically disappeared in the nanoceramic samples. It was suggested that nanoparticle's surface, which is an efficient trap for excitons and charge carriers, plays the crucial role in peculiarities of luminescence characteristics in nanocrystals.",

keywords = "Nanoceramic, Nanocrystals, Scintillators, Time-resolved luminescence, Yttrium-aluminum garnet (YAG)",

author = "Vladimir Pankratov and Larisa Grigorjeva and Stanislav Chernov and Tadeusz Chudoba and Witold Lojkowski",

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doi = "10.1109/TNS.2007.915070",

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T1 - Luminescence properties and energy transfer processes in nanosized cerium doped YAG

AU - Pankratov, Vladimir

AU - Grigorjeva, Larisa

AU - Chernov, Stanislav

AU - Chudoba, Tadeusz

AU - Lojkowski, Witold

PY - 2008/6

Y1 - 2008/6

N2 - Luminescence properties of cerium doped Y3Al5O 12 (YAG) nanocrystals in form of nanopowders and nanoceramics have been studied. The comparative analysis of luminescence characteristics for nano- and single- crystals has been done. It was detected that an excitonic mechanism of the energy transfer from the host lattice to cerium ions does not work in nanopowders and nanoceramic. It was also shown that antisite-related and self-trapped exciton-related luminescence bands are suppressed strongly in nanopowders, and it can be excited only under certain circumstances. These bands practically disappeared in the nanoceramic samples. It was suggested that nanoparticle's surface, which is an efficient trap for excitons and charge carriers, plays the crucial role in peculiarities of luminescence characteristics in nanocrystals.

AB - Luminescence properties of cerium doped Y3Al5O 12 (YAG) nanocrystals in form of nanopowders and nanoceramics have been studied. The comparative analysis of luminescence characteristics for nano- and single- crystals has been done. It was detected that an excitonic mechanism of the energy transfer from the host lattice to cerium ions does not work in nanopowders and nanoceramic. It was also shown that antisite-related and self-trapped exciton-related luminescence bands are suppressed strongly in nanopowders, and it can be excited only under certain circumstances. These bands practically disappeared in the nanoceramic samples. It was suggested that nanoparticle's surface, which is an efficient trap for excitons and charge carriers, plays the crucial role in peculiarities of luminescence characteristics in nanocrystals.

KW - Nanoceramic

KW - Nanocrystals

KW - Scintillators

KW - Time-resolved luminescence

KW - Yttrium-aluminum garnet (YAG)

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DO - 10.1109/TNS.2007.915070

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JO - IEEE Transactions on Nuclear Science

JF - IEEE Transactions on Nuclear Science

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Luminescence properties and energy transfer processes in nanosized cerium doped YAG

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Keywords

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