Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1795439 | Journal of Crystal Growth | 2008 | 4 Pages |
Abstract
Synthesis and luminescence properties of Mg4Nb2O9 nanocrystals by citric gel process were investigated in this work. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), and photoluminescence (PL). The excitation band at about 241 and 341 nm originates from the regular and defect octahedra group [NbO6]7−. The room-temperature PL spectra under 241 and 341 nm excitations show a broad violet and a very strong emission peaks located at 390 and 402 nm, respectively.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Te-Hua Fang, Yu-Jen Hsiao, Liang-Wen Ji, Yee-Shin Chang, Sung-Shui Chi,