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Optical properties of epitaxial $Gd_2$O_3:EU^{3+}$luminescent thin films depending on crystallinity  

장문형 (연세대학교 물리 및 응용물리 사업단)
최윤기 (연세대학교 물리 및 응용물리 사업단)
정권범 (연세대학교 물리 및 응용물리 사업단)
황보상우 (연세대학교 물리 및 응용물리 사업단)
장홍규 (연세대학교 물리 및 응용물리 사업단)
노명근 (연세대학교 물리 및 응용물리 사업단)
조만호 (한국표준과학연구원 물질량표준부)
손기선 (순천대학교 금속/재료공학과)
김창해 (한국화학연구원 형광물질연구그룹)
Publication Information
Journal of the Korean Vacuum Society / v.12, no.4, 2003 , pp. 275-280 More about this Journal
Abstract
Epitaxial Gd$_2O_3:Eu^{3+}$luminescent thin films have been grout on Si(III) substrates using ionized Cluster Beam Deposition (ICBD). After the film growing, they were implanted and post annealed to change the crystal structure. The initial growth stage was monitored by using in-situ Reflection High Energy Electron Diffraction (RHEED). The formed crystal structure was identified with X-ray diffraction (XRD) technique and Fourier transform infrared (FT-R) spectroscopy. The electronic states variations were investigated by Near Edge X-ray Absorption Fine Structure (NEXAFS). Photoluminescence (PL), Cathodoluminescence (CL). and Vacuum ultraviolet (VUV) spectrum were used for examining the optical properties. We report the optical property changes depending on crystal structure and the electronic states.
Keywords
$Gd_2O_3$:Eu^{3+; Gd_2O_3:Eu^{3+}$; ion implantation; optical properties; epitaxial film;
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