中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 20 No. 8 August 2010 |
（1. School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China;
2. Henan Branch of China Aluminium Company, Zhengzhou 450041, China）
Abstract:Eu-doped GaOOH nanoparticles with size of 5−8 nm were prepared by hydrothermal method using sodium dodecylbenzene sulfonate (SDBS) as surfactant. Eu-doped α-Ga2O3 and β-Ga2O3 were further fabricated by annealing GaOOH׃Eu and then characterized by X-ray diffraction(XRD), transmission electron microscopy (TEM) and photoluminescence (PL). The TEM results show that monodisperse Eu3+-doped GaOOH nanoparticles form and then transform into Eu3+-doped α-Ga2O3 and β-Ga2O3 through annealing the GaOOH׃Eu nanoparticles at 600 and 900 °C, respectively. PL studies indicate that GaOOH׃Eu has the highest intensity at 618 nm. Luminescence quenching is observed at higher Eu3+concentration in all samples.
Key words: hydrothermal method; GaOOH; Ga2O3; Eu-doped nanoparticle; photoluminescence
