Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
11006544 | Journal of Luminescence | 2018 | 14 Pages |
Abstract
Microcrystalline powder of YNbO4:Sm3+ with different recipes are prepared using conventional solid-state method. X-ray diffraction patterns are measured and confirm formation of tetragonal phase structure. Absorption spectrum are collected and spectral characteristic are analyzed through Judd-Ofelt theory. Higher asymmetric nature of Sm3+ ions sites and ionic nature of the chemical bond between Sm3+ ions and [NbO4]3- ligand is discovered. Excitation spectrum with emission wavelength at 647â¯nm are recorded, and a strong excitation band near 270â¯nm originated from absorption of [NbO4]3- groups in crystalline lattice of YNbO4 and six excitation peaks due to 4fâ4f transition of Sm3+ ions are revealed. Emission spectrum excited at 270ânm and 410ânm are also measured and compared with each other. The calculated results of CIE color coordinates indicate that all the coordinates of five samples locate at blue light region.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Chunhui Niu, Yajing Deng,