錯体重合法により調製したBaS:Eu前駆体を用いたBaAl_2S_4:Eu蛍光体の合成(<特集>希土類系物質の精密合成,形態制御および機能物性)

概要

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In this study we introduce a two-step strategy for the synthesis of BaAl_2S_4 : Eu bulk samples. The first step involves synthesis of a BaS : Eu intermediate by a sol-gel/polymerizable complex method, which provides a highly homogenous distribution of Eu in the BaS. The second step involves solid-state reaction between the BaS : Eu intermediate with Al_2S_3 in an ampoule at high temperature. It was found that phase purity increases with increasing synthesis temperature and almost single-phase samples can be obtained at above 900℃. However, BaAl_2S_4 : Eu samples synthesized at lower temperatures produced more intense emission. To the best of our knowledge, this is the first time a solution method has been used in the preparation of BaAl_2S_4 : Eu.
社団法人日本セラミックス協会の論文
2007-10-01