npsm 새물리 New Physics : Sae Mulli

pISSN 0374-4914 eISSN 2289-0041
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Article

Research Paper

New Physics: Sae Mulli 2010; 60: 435-439

Published online April 30, 2010 https://doi.org/10.3938/NPSM.60.435

Copyright © New Physics: Sae Mulli.

Luminescence Properties and Their Temperature Dependence of Y$_{2-x}$Gd$_x$O$_3$:Eu$^{3+}$ Thin Films Investigated by Site-selective Laser-excitation spectroscopy

Kyoung Hyuk JANG*

Basic Science Research Institute, Pukyong National University, Busan 608-737

Correspondence to:khjang@gmail.com

Abstract

Luminescence properties of Y2-xGdxO3:Eu3+(x = 0 to 2.0) thin films are investigated by siteselective laser excitation spectroscopy at different temperature. The films were grown by pulsed laser deposition method on SiO2(100) substrates. Cubic phase Y2O3, cubic and monoclinic phase Y2?xGdxO3:Eu$^{3+}$(x = 0.3 to 2.0) are identified in the excitation spectrum of the $^{7}$F0 → $^{5}$D0 transition of Eu$^{3+}$. The emission spectra of the $^{5}$D0 → $^{7}$FJ (J = 1, 2) transition from individual Eu$^{3+}$ centers were obtained by tuning the laser to resonance with each excitation line. The blue shift of cubic phase C2 and monoclinic phase CS(B) and CS(C) excitation peak was associated with increasing temperature. But the peak shift of monoclinic phase CS(A) has not been observed.

Keywords: Y2?xGdxO3, Eu3+, Laser spectroscopy, Photoluminescence

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