Experimental and first principle study of the structure, electronic, optical and luminescence properties of M-type GdNbO4 phosphor

Publication date: Available online 9 March 2018 Source:Journal of Solid State Chemistry Author(s): Shoujun Ding, Haotian Zhang, Qingli Zhang, Yuanzhi Chen, Renqin Dou, Fang Peng, Wenpeng Liu, Dunlu Sun In this work, GdNbO4 polycrystalline with monoclinic phase was prepared by traditional high-temperature solid-state reaction. Its structure was determined by X-ray diffraction and its unit cell parameters were obtained with Rietveld refinement method. Its luminescence properties (including absorbance, emission and luminescence lifetime) were investigated with experiment method and the CIE chromaticity coordinate was presented. Furthermore, a systematic theoretical calculation (including band gap, density of states and optical properties) based on the density function theory methods was performed on GdNbO4. Lastly, a comparison between experiment and calculated results was conducted. The calculated and experiment results obtained in this work can provide an essential understanding of GdNbO4 material. Graphical abstract

Source: Journal of Solid State Chemistry - March 10, 2018 Category: Chemistry Source Type: research