Luminescence and electrical studies of Li2Ni(WO4)2 microcrystals

被引：2

作者：

Shruthi, D. L. ^{[1
]}

Kumar, G. N. Anil ^{[1
]}

Reddy, A. Jagannatha ^{[1
]}

机构：

[1] VTU, MS Ramaiah Inst Technol Autonomous, Dept Phys, Bengaluru 560054, India

来源：

MATERIALS TODAY-PROCEEDINGS | 2021年 / 46卷

关键词：

Photoluminescence; Impedance analysis; Rietveld refinement; LI2M(WO4)(2) M; CO;

D O I：

10.1016/j.matpr.2021.02.713

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Li2Ni (WO4)(2) microcrystals have been synthesized at 600 degrees C by Solid state method and characterized using X-ray diffraction, FTIR, UV-visible spectroscopy, Photoluminescence and impedance analyzer. The sample crystallized under triclinic system with a P (1) over bar space group obtained by Rietveld refinement results from PXRD measurement. Fourier transform infrared spectroscopy analysis was carried out for identification of functional group. Energy band gap value are estimated by using UV-visible spectroscopy and found to be 2.74 eV. SEM images shows the formation of spherical microstructure in the range of 1-7 mu m. Photoluminescence spectra shows the blue-green emission peaks excited at 331 nm. PL emission spectra shows the 407 nm, 447 nm and two bands at 484 nm and 531 nm due to transition from T-3(1), T-3(2) excited states to (1)A(1) ground state. The impedance (Z' and Z '') is investigated as a function of frequency shows conductivity of the Li2Ni (WO4)(2) at room temperature. All these results indicate Li2Ni(WO4)(2) shows promising optical and electrical properties. (C) 2021 Elsevier Ltd. All rights reserved.

引用

页码：5772 / 5776

页数：5

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