Abstract
In this work, the multifunctional (KBYS:Ce/Eu-Tb) phosphors were synthesized by using the conventional high-temperature solid-state reaction, and the luminescence properties were investigated for LED and optical thermometer applications. The single-phase samples were checked by x-ray diffractometer patterns. The energy transfer was found in both and codoped samples, which was verified by spectra and decay curves. Correspondingly, the tunable emission was realized by adjusting the dopant concentrations and white light was obtained in the sample, owing to the energy transfers among , , and . By studying the temperature dependence of the , it has been found that the fluorescence intensity ratio for and emissions changes with temperature, indicating the potential application in an optical thermometer. The high absolute sensitivity was determined to be . By evaluating the thermal quenching luminescence of the , the thermal quenching temperature was determined to be 555 K, implying high thermally luminescent stability.
© 2019 Optical Society of America
Full Article | PDF ArticleMore Like This
Shaojun Sun, Li Wu, Huan Yi, Liwei Wu, Jingyuan Ji, Chunling Zhang, Yi Zhang, Yongfa Kong, and Jingjun Xu
Opt. Mater. Express 6(4) 1172-1185 (2016)
Jia Zhang, Lei Zhao, Xintian Bian, and Guibin Chen
Opt. Express 26(18) A904-A914 (2018)
Ju Cheng, Jia Zhang, Jian Lu, Hongchao Zhang, Sardar Maryam, Zhonghua Shen, Xiaowu Ni, Xintian Bian, Pengcheng Ma, and Jin Shi
Opt. Mater. Express 8(7) 1850-1862 (2018)