Investigations of the optical and EPR properties of LiGa{sub 5}O{sub 8}:Cr{sup 3+} phosphor
- Department of Chemical Engineering, Konkuk University, Seoul 143-701 (Korea, Republic of)
- Department of Physics, Government College for Men (A), Kadapa 516 004 (India)
- Department of Physics, Sri Venkateswara University, Tirupati 517 502 (India)
Highlights: • Cr{sup 3+} doped LiGa{sub 5}O{sub 8} phosphor was synthesized by solution combustion synthesis. • Morphological studies show the non-uniform distribution of particles. • Photoluminescence spectra of Cr{sup 3+} doped LiGa{sub 5}O{sub 8} showed the characteristic Cr{sup 3+} peaks. • EPR spectrum showed Cr{sup 3+} ions in tetragonally distorted octahedral symmetry. - Abstract: Red emitting LiGa{sub 5}O{sub 8} doped with Cr{sup 3+} ions has been prepared by a low temperature solution combustion route. The as-prepared phosphor was studied using X-ray diffraction and scanning electron microscopic techniques. The optical spectrum exhibits two broad bands characteristic of Cr{sup 3+} ions in an octahedral symmetry. Upon excitation at 590 nm, the material displays narrow red emission line centered at 715 nm due to the {sup 2}E{sub g} → {sup 4}A{sub 2g} transition of Cr{sup 3+} ions. Electron paramagnetic resonance analyses of the sample confirm the presence of Cr{sup 3+} in the LiGa{sub 5}O{sub 8} matrix.
- OSTI ID:
- 22420756
- Journal Information:
- Materials Research Bulletin, Vol. 61; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
Similar Records
Synthesis, characterization, photoluminescence and EPR investigations of Mn doped MgAl{sub 2}O{sub 4} phosphors
Studies of defects in combustion synthesized europium-doped LiAl{sub 5}O{sub 8} red phosphor