Optical properties

Synthesis and Luminescence of Ba$_2$ScCl$_7$

R. A. Bhoyar^a, A. C. Nayak^a, S. P. Wankhede^b, P. D. Belsare^c, S. V. Moharil<sup>d

a</sup> RKDF University, Bhopal, India
^b Department of Physics, K.D.K. College of Engineering, Nagpur, India
^c Shri Ramdeobaba College of Engineering and Management, Nagpur, 440013, India
^d Department of Physics, RTM Nagpur University, Nagpur, 440033, India

Abstract: New results on luminescence in Ba$_2$ScCl$_7$ are reported. Lanthanides Eu$^{2+}$ and Ce$^{3+}$ were chosen as activators. The phosphors could be prepared by a simple wet chemical method. Reduction of europium to the divalent form could be achieved at 400$^\circ$C. Both activators exhibit strong photoluminescence (PL) originating in transitions from the lowest energy state of 4f$^{n-1}$15d$^1$ configuration to the ground state of 4f$^7$/4f$^1$ configuration. Simple preparation coupled with intense PL prompted us to suggest that these hitherto unexplored phosphors could be exploited for applications such as scintillator.

Keywords: halide, photoluminescence, phosphor.

Received: 24.02.2021
Revised: 02.03.2021
Accepted: 03.03.2021

Language: English

 English version: Physics of the Solid State, 2021, 63:6, 948–952