YAKHAK HOEJI (약학회지)
- Volume 7 Issue 1
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- Pages.26-29
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- 1963
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- 0377-9556(pISSN)
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- 2383-9457(eISSN)
Studies on the Preparation of Phosphorescent Materials
당광체에 관한 연구
Abstract
Three systems such as CaS, BaS and ZnS are used as ground materials and transition elements such as Bi, Cu, Ag and Ni are used as activators to preared phosphorescent materials of strong after-grow intensity. These three systems in which we have 31 kinds of different composition samples are heated at given temperatures in the electrical furnace and are cooled in the air in order to crystallize them. In the case of BaS system, the mixture of CaO and purified S is better than the other kinds of calcium compound as the ground materials to crystallize phosphors. In BaS system, the mixture of BaCO
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