Thermo, Iono and photoluminescence properties of 100 MeV Si⁷⁺ ions bombarded CaSiO₃:Eu³⁺ nanophosphor

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• 作者：D.V. Sunitha^a ; H. Nagabhushana^a ; ^{bhushanvlc@gmail.com} ; Fouran Singh^b ; B.M. Nagabhushana^c ; S.C. Sharma^a ; R.P.S. Chakradhar^d
• 关键词：Nanophosphor ; Thermoluminescence ; Ionoluminescence ; Photoluminescence ; Ion beam
• 刊名：Journal of Luminescence
• 出版年：2012
• 期刊代码：54_00222313
• 类别：ch
• 出版时间：August, 2012
• 卷：132
• 期：8
• 页码：2065-2071
• 文件大小：872 K

摘要

This paper reports on the thermo (TL), iono (IL) and photoluminescence (PL) properties of nanocrystalline CaSiO₃:Eu³⁺ (1-5 mol%) bombarded with 100 MeV Si⁷⁺ ions for the first time. The effect of different dopant concentrations and influence of ion fluence has been discussed. The characteristic emission peaks ⁵D₀鈫?sup>7F_J (J=0, 1, 2, 3, 4) of Eu³⁺ ions was recorded in both PL (1脳10¹¹-1脳10¹³ ions cm^鈭?) and IL (4.16脳10¹²-6.77脳10¹² ions cm^鈭?) spectra. It is observed that PL intensity increases with ion fluence, whereas in IL the peaks intensity increases up to fluence 5.20脳10¹² ions cm^鈭?, then it decreases. A well resolved TL glow peak at 鈭?04 掳C was recorded in all the ion bombarded samples at a warming rate of 5 掳C s^鈭?. The TL intensity is found to be maximum at 5 mol%Eu³⁺ concentration. Further, TL intensity increases sub linearly with shifting of glow peak towards lower temperature with ion fluence.