1. Effects of Zn-doping on red-luminescence in Eu-doped (Mg,Ca)S phosphor films
- Author
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Seiichi Tokunaga and Akiyoshi Mikami
- Subjects
Materials science ,Photoluminescence ,Inorganic chemistry ,Doping ,Analytical chemistry ,General Physics and Astronomy ,Phosphor ,Surfaces and Interfaces ,General Chemistry ,Condensed Matter Physics ,Surfaces, Coatings and Films ,Crystal ,Sputtering ,Luminescence ,Intensity (heat transfer) ,Solid solution - Abstract
For the improvement of emission efficiency, ZnS-doped Mg0.8Ca0.2S:Eu phosphor film was made using rf-magnetron sputtering method. When the concentration of ZnS in the film is 4%, the photoluminescence intensity is about three times higher than that of ZnS-non-doped Mg0.8Ca0.2S:Eu film with keeping pure red emission (∼650 nm). The crystal planes are oriented in (2 0 0) direction and make a solid solution with ZnS. Enhancement in photoluminescence (PL) intensity is closely related to the change of the crystal quality.
- Published
- 2005
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