Yttrium antisite reduction and improved photodiode performance in Ce doped Y3Al5O12 by Czochralski growth in alumina rich melts
作者： Drew T. Haven , Peter T. Dickens , Marc H. Weber , Kelvin G. Lynn
DOI: 10.1063/1.4816260
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摘要: Single crystal cerium doped yttrium aluminum garnet boules were grown by the Czochralski method. Cerium concentrations held at 1.0 at. % (with respect to in an on stoichiometric charge) but melt stoichiometry ranged from 10.0 yttria rich alumina 5.0% increments. Photo-luminescence, lifetime, and scintillation data demonstrate a measureable decrease UV defect emission as becomes rich. This is strongly consistent with suppression of equilibrium YAl3+ antisite boule shifts towards does not alter thermoluminescence behavior, making case that carrier traps antisites are independent defects. Additionally, in-diffusion post growth treatment indicates observed change reduction alone, opposed alteration antisite-vacancy complexes. The results culminate large increase visible emissi...
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