Electron paramagnetic resonance and photoluminescence investigation on ultraviolet-emitting gadolinium-ion-doped CaAl₁₂O₁₉ phosphors

Vijay Singh; S Borkotoky; A Murali; J L Rao; T K Gundu Rao; S J Dhoble

doi:10.1016/j.saa.2014.11.097

Electron paramagnetic resonance and photoluminescence investigation on ultraviolet-emitting gadolinium-ion-doped CaAl₁₂O₁₉ phosphors

Spectrochim Acta A Mol Biomol Spectrosc. 2015 Mar 15:139:1-6. doi: 10.1016/j.saa.2014.11.097. Epub 2014 Dec 9.

Authors

Vijay Singh¹, S Borkotoky², A Murali², J L Rao³, T K Gundu Rao⁴, S J Dhoble⁵

Affiliations

¹ Department of Chemical Engineering, Konkuk University, Seoul 143-701, Republic of Korea. Electronic address: vijayjiin2006@yahoo.com.
² Centre for Bioinformatics, Pondicherry University, Puducherry 605 014, India.
³ Department of Physics, Sri Venkateswara University, Tirupati 517 502, India.
⁴ Institute of Physics, University of Sao Paulo, Sao Paulo, SP 05508-090, Brazil.
⁵ Department of Physics, RTM Nagpur University, Nagpur 440033, India.

PMID: 25546490
DOI: 10.1016/j.saa.2014.11.097

Abstract

The gadolinium doped CaAl12O19 phosphor has been prepared by a low temperature solution combustion method in a short time and characterized using powder X-ray diffraction, energy dispersive analysis of X-ray mapping, electron paramagnetic resonance (EPR) and photoluminescence spectroscopic techniques. EPR and optical analysis of the sample confirm the presence of Gd(3+) in the CaAl12O19 matrix.

Keywords: CaAl(12)O(19); Combustion; EPR; Gd(3+) ions; Photoluminescence; XRD.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Aluminum Compounds / chemistry*
Calcium / chemistry*
Calcium Compounds / chemistry*
Electron Spin Resonance Spectroscopy
Gadolinium / chemistry*
Ions
Luminescence*
Luminescent Agents / chemistry*
Oxides / chemistry*
Spectrometry, X-Ray Emission
X-Ray Diffraction

Substances

Aluminum Compounds
Calcium Compounds
Ions
Luminescent Agents
Oxides
Gadolinium
Calcium