Controlled Hydrothermal Synthesis and Photoluminescence of Nanocrystalline ZnGa 2 O 4 :Cr 3+ Monospheres
| 作者： | Tian Luan, Jinhan Liu, Xiaoxue Yuan, Ji-Guang Li |
| 作者单位： |
1Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University 2Institute of Ceramics and Powder Metallurgy, School of Materials Science and Engineering, Northeastern University 3Research Center for Functional Materials, National Institute for Materials Science |
| 刊名： | Nanoscale Research Letters, 2017, Vol.12 (1), pp.1-8 |
| 来源数据库： | Springer Journal |
| DOI： | 10.1186/s11671-017-1996-x |
| 关键词： | ZnGa 2 O 4; Cr red phosphor; Monospheres; Hydrothermal synthesis; Photoluminescence; |
| 英文摘要： | Abstract(#br)The hydrothermal synthesis of nanocrystalline ZnGa 2 O 4 :Cr 3+ (ZGC) red phosphor monospheres was accomplished in this work, and the effects of system pH, reactant content, reaction time, and citrate anions (Cit 3− ) on the phase and morphology evolution of the product were systematically studied. Under the optimized conditions of Cit 3− / M = 1.0 molar ratio ( M = total cations), pH = 5.0, and 0.2 mmol of Zn 2+ , well-dispersed ZGC monospheres with an average diameter of ~454 ± 56 nm (average crystallite size ~15 nm) were successfully obtained via hydrothermal reaction at 180 °C for 18 h. Cit 3+ ions were demonstrated to be crucial to the formation of monospheres and substantially affect the pathway of phase formation. The ZGC monospheres calcined at 800 °C (average... |
