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This article is cited in 6 scientific papers (total in 6 papers)
Impurity centers
NaSrBO$_3$ : Ce, Yb phosphor for NIR emission around 1 $\mu$m
P. K. Tawalarea, P. D. Belsarea, S. V. Moharilb a Shri Ramdeobaba College of Engineering and Management, Nagpur, India
b Department of Physics, Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur, India
Abstract:
Synthesis and characterization of NaSrBO$_3$ : Ce, Yb phosphor is described. NaSrBO$_3$ : Ce phosphor exhibited characteristic Ce$^{3+}$ emission around 414 nm. Co-doping with Yb$^{3+}$ resulted in near-infrared (NIR) emission around 981 nm. This is attributed to phonon-assisted cooperative energy transfer from Ce$^{3+}$ to two Yb$^{3+}$ ions. Ce$^{3+}\to$ Yb$^{3+}$ energy transfer is proved using a variety of measurements such as dependence of photoluminescence intensity of visible and NIR emissions on Yb$^{3+}$ concentration, excitation spectrum for Yb$^{3+}$, accelerated decay of Ce$^{3+}$ emission after Yb$^{3+}$ codoping, etc. Using lifetime measurements, the efficiency of Ce$^{3+}\to$ Yb$^{3+}$ energy transfer is estimated to be 48.65%.
Keywords:
near-infrared, photoluminescence, Ce$^{3+}\to$ Yb$^{3+}$ energy transfer, borate.
Received: 25.12.2020 Revised: 25.12.2020 Accepted: 01.01.2021
Citation:
P. K. Tawalare, P. D. Belsare, S. V. Moharil, “NaSrBO$_3$ : Ce, Yb phosphor for NIR emission around 1 $\mu$m”, Fizika Tverdogo Tela, 63:5 (2021), 662; Phys. Solid State, 63:5 (2021), 758–763
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https://www.mathnet.ru/eng/ftt10148 https://www.mathnet.ru/eng/ftt/v63/i5/p662
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