Single-crystalline films of Ce-doped YAG and LuAG phosphors: advantages over bulk crystals analogues

Luminescent properties of phosphors based on single-crystalline films (SCF) of Y 3Al 5O 12:Ce (YAG:Ce) and Lu 3Al 5O 12:Ce (LuAG:Ce) garnet have been analyzed in comparison with single-crystal (SC) analogues. It has been shown that the main peculiarity of luminescent properties of YAG:Ce and LuAG:Ce...

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Published inJournal of luminescence Vol. 114; no. 2; pp. 85 - 94
Main Authors Zorenko, Yu, Gorbenko, V., Konstankevych, I., Voloshinovskii, A., Stryganyuk, G., Mikhailin, V., Kolobanov, V., Spassky, D.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.08.2005
Subjects
Anti-site defects
Ce-dopant
Excitons
Garnets
Luminescence
Single crystals
Single-crystalline films
Ce-dopant
78.20.−e
78.55.Hx
Single crystals
Excitons
Anti-site defects
Garnets
Single-crystalline films
Luminescence
78.60.Nk
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Summary:Luminescent properties of phosphors based on single-crystalline films (SCF) of Y 3Al 5O 12:Ce (YAG:Ce) and Lu 3Al 5O 12:Ce (LuAG:Ce) garnet have been analyzed in comparison with single-crystal (SC) analogues. It has been shown that the main peculiarity of luminescent properties of YAG:Ce and LuAG:Ce SCF as compared to SC is determined by the extremely low concentration of Y Al 3+ and Lu Al 3+ antisite defects (AD) in SCF. The advantages of phosphors based on YAG:Ce and LuAG:Ce SCF are caused by the absence in these SCF the additional channels for dissipation of excitation energy connected with AD and vacancy-type defects.
ISSN:0022-2313
1872-7883
DOI:10.1016/j.jlumin.2004.12.002