Noriko Kobayashi, first-year student in the master’s program of Chuo University's Graduate School of Science and Engineering (Applied Chemistry), was awarded for an excellent oral presentation at the 52nd autumn conference of Japan Electronic Materials Society on November 13, 2015.
[Title of the presentation]
Synthesis and structural analysis of the phosphorescent agent Sr1-xEuxAI2O4
Noriko Kobayashi, Keita Suzuki, Kengo Oka, and Katsuyoshi Oh-ishi
(Graduate School of Science and Engineering, Chuo University)
By meticulously studying the crystal structure of the oxide SrAl2O4 including europium (Eu) ion, which is used as a phosphorescent agent, with the Rietveld structural analysis method using ordinary X-rays as well as radiated light, they clarified the coexistence state of strontium (Sr) and europium (Eu) ions inside the crystal structure, which had been ignored, and indicated the importance of the relation between the coexistence state and luminescence properties.
This study is expected to provide particularly useful hints for seeking new phosphorescent agents or fluorescent materials.