发光学报Issue(9)：1034-1039,6.DOI:10.3788/fgxb20143509.1034
YVO4∶ Tm3+的真空紫外发光性能
Vacuum Ultraviolet Spectra of YVO4：Tm3 +
摘要
Abstract
Series of blue phosphors YVO4∶ xTm (x = 0. 001, 0. 003, 0. 005, 0. 007, 0. 01, 0. 03, 0. 05) were synthesized by the high temperature solid state reaction in this paper. X-ray diffraction shows that the product is a tetragonal zircon structured single phase. The result is consistent with JCPDS standard card (72-0861). The vacuum UV excitation spectrum and emission spectra of the phosphors at room temperature were also detected. The vacuum UV excitation spectrum of YVO4 ∶xTm includes a continuous banded peak in the range of 120 - 350 nm, and there are two significant peaks at 155 nm and 333 nm. Excited by 155 nm, the emission spectrum of YVO4∶ xTm consists of two parts. The main emission spectrum at 474 nm is a sharp peak, caused by 1 G4→3 H6 transition of Tm3 + . The weaker emission peak is at 650 nm, which is generated by 1 G4→3 H4 transition of Tm3 + . In addition, there is a weak band emission centering around 540 nm, which presents broadband emission of VO3 -4 ions. With the increasing of Tm3 + mole fraction (x) from 0. 001 to 0. 005, the emission intensity gradually increases to a maximum value. Then, as x increases continuously, the emission intensity decreases gradually, presents an obvious concentration quench. By analyzing the spectra of YVO4∶ xTm and its luminescent mechanism, it can be derived that YVO4∶ Tm3 + is a kind of blue phosphor material with high luminous efficiency and color purity under ultraviolet or vacuum ultraviolet excitation.关键词
蓝光发射/YVO4∶Tm3 +/真空紫外Key words
blue emitting/YVO4∶Tm3 +/vacuum ultraviolet分类
数理科学引用本文复制引用
沈雷军,李波,王忠志,高乐乐,周永勃,赵增祺,张国斌..YVO4∶ Tm3+的真空紫外发光性能[J].发光学报,2014,(9):1034-1039,6.基金项目
包头钢铁集团项目(2012H1733)资助 （2012H1733）
