[18p-G204-1~16] 13.8 Optical properties and light-emitting devices

[18p-G204-8] Structure and luminescent properties of K⁺ doped Zn₂SiO₄:Mn-SiO₂ composite

〇Tomoko Akai¹, Masaru Yamashita¹ (1.AIST)

Keywords:afterglow luminescence, Zn2SiO4:Mn, SiO2

We have investigated structure and luminescent properties of K doped Zn₂SiO₄:Mn-SiO₂ composites. Emission at 530nm was drastically increased with K doping. In addition, afterglow luminescence was observed in K doped composites. From SEM(secondary electron and reflected electron) images, it is speculated that Zn₂SiO₄:Mn phase as large as a few tenth of nm are formed in K doped coposites.