Green-emissive transparent BaSi2O5:Eu film phosphor on quartz glass created by a sputtering thermal diffusion process |
| |
Authors: | KI Seo JH Park JS Kim YH Na JC Choi JS Bae |
| |
Institution: | aDepartment of Image System Science and Engineering, Pukyong National University, Pusan 608-739, South Korea;bDepartment of Physics, Yonsei University, Wonju 220-710, South Korea;cBusan Center Korea Basic Science Institute, Pusan 608-735, South Korea |
| |
Abstract: | Eu2+-doped BaSi2O5 film phosphors on quartz substrates are fabricated by radio-frequency magnetron sputtering thermal diffusion. The BaSi2O5: Eu2+ phosphor crystals have some preferred orientations that are lattice-spacing matched with the crystallized β- SiO2 crystals, and they show pore and grain boundary-free morphology with a rod-like shape fused into the crystallized β- SiO2 crystals. The BaSi2O5: Eu2+ film phosphor has a high transparency, with a transmittance of about 30% in visible light. The BaSi2O5: Eu2+ film phosphor shows 510 nm green emission from the f–d transition of the Eu2+ ions, and in particular the best sample shows a green photoluminescence brightness of about 5% of a BaSi2O5: Eu2+ powder phosphor screen. These excellences in optical properties can be explained by less optical scattering at pores or grain boundaries, and less reflection at the continuously index-changed interface. |
| |
Keywords: | A Film phosphor B Thermal diffusion D Transparency D Photoluminescence |
本文献已被 ScienceDirect 等数据库收录! |
|