[20a-E304-1~10] 16.1 Fundamental properties, evaluation, process and devices in disordered materials

[20a-E304-1] Photoluminescence properties of Cu⁺/Sn²⁺ -activated BaO-B₂O₃ glass

〇Tomoya Konishi¹, Chisaki Kubo¹, Shun Kamada², Weiwei Xu¹, Takanori Kozai¹, Takeshi Fujihara¹, Tao Zheng¹, Masaru Kamano¹ (1.NIT, Anan, 2.Tokushima Univ.)

Keywords:glass, Photoluminescence

Since barium borate glass can form microspheres of 10 to 50 μm in diameter using phase separation and can confine light inside, it is potentially used for microsphere optical devices with high emission efficiency due to high refractive index (n= 1.76). If barium borate glass is doped with Sn^{2 +}, Cu⁺, it is expected to have broadband light emission characteristics. In this study, we have tried to prepare barium borate glass samples doped with 0.1 mol% of Cu₂Oand varying amount of Sn^{2 +}. The appearance and luminescence intensity of the glass were compared and examined. As a result, when the amount of Sn²⁺was increased, the yellowish white emission intensity became stronger. It was also suggested that the amount of Sn^{2 +}changes the kind of emission centers.