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Single-crystalline films of Ce-doped YAG and LuAG phosphors: advantages over bulk crystals analogues |
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| Authors: | Yu Zorenko V Gorbenko A Voloshinovskii V Mikhailin D Spassky |
| Institution: | a Laboratory of optoelectronic materials, Department of Electronics, Ivan Franko National University of Lviv, 107 Generala Tarnavskogo, 79044 Lviv, Ukraine b Physics Department, Ivan Franko National University of Lviv, 8 Kyryla i Mefodia Str., 79005 Lviv, Ukraine c Synchrotron Radiation Laboratory, Physical Faculty, Moscow State University, 119899 Moscow, Russian Federation d Skobeltsyn Institute of Nuclear Physics, Moscow State University, 119899 Moscow, Russian Federation |
| Abstract: | Luminescent properties of phosphors based on single-crystalline films (SCF) of Y3Al5O12:Ce (YAG:Ce) and Lu3Al5O12: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 YAl3+ and LuAl3+ 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. |
| Keywords: | 78 20 &minus e 78 55 Hx 78 60 Nk |
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