Preparation,structure and optical properties of Pr:Gd2O3 phosphor |
| |
| Authors: | Jing Su Xiao-feng Yang Ling Wang Chu-qin Wang Yu-qing Ji |
| |
| Affiliation: | 1. College of Math and Physics, Nanjing University of Information Science and Technology, Nanjing 210044, China;2. Technical Center of Gansu Rare Earth New Material Limited-liability Company, Baiyin 730922, China;1. Department of Physics, Sri Guru Granth Sahib World University, Fatehgarh Sahib 140407, Punjab, India;2. Department of Physics, Shri Guru Teg Bahadur Khalsa College, Sri Anandpur Sahib 140118, Punjab, India;1. Key Laboratory of Transparent Opto-functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;2. Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China;1. Department of Biomedical Engineering, Technological Educational Institute of Athens,122 10 Athens, Greece;2. Faculty of Chemistry, Wroclaw University, 14F Joliot-Curie Street, 50-383 Wroclaw, Poland |
| |
| Abstract: | Pr3+-doped Gd2O3 phosphor powders were prepared by co-precipitation method. Their structures during heat-treatments were studied by XRD and IR methods. The pH was optimized to be 8 in the co-precipitation process and the hydroxide precursors were transformed into pure phase cubic Gd2O3 at 500 °C for 1 h. Optical properties of Pr:Gd2O3 phosphor powders were reported. The main emission bands are assigned to 1D2 → 3H4, 3P0 → 3H6, 3P0 → 3F2 transition of Pr3+ under excitation at 255 and 488 nm. The emission intensities increase with increasing sintering temperature. Concentration quenching appears as the Pr3+ doping-concentration up to 1 at.%. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
