Red-Emitting Ga2O3:Eu3+ Powder Derived by Sol-Gel Processing
Ga2O3:Eu3+ powder was synthesized by sol-gel method with inorganic salt raw materials, and the crystal structure and luminescent properties were investigated. The structures studied by X-ray diffractionmeter showed that single monoclinism could be obtained using this simple processing. Along with the rise of the calcining temperature, the crystallinity of Ga203: Eu3 + powder increased and the particle size grew larger. The excitation spectra of the powder showed a wide CTS band and typical excitation from Eu3+ ion, while the emission spectra had a strongest red emission peak at 613 nm. The excitation and emission intensities changed along with the calcining temperature from 650 to 1050 ℃ and had an optimal calcining temperature. The excitation and emission intensities also changed along with the doping concentration of Eu3+ ion from 0.25％ to 4％ (atom fraction) and achieve a maximum at a certain concentration which differed for direct Eu3 + excitation or CTS excitation. The electroluminescent spectra indicated the typical red emission from Eu3 + ion.
Ga2O3:Eu3+ sol-gel monoclinism luminescence rare earths
Yang Chun Zhang Junying Xue Daoqi Wang Ximing Wang Tianmin
Center of Materials Physics and Chemistry, School of Science, Beihang University, Beijing 100083, China
国际会议
海口
英文
90-93
2006-11-13（万方平台首次上网日期，不代表论文的发表时间）