Fluorescence characteristics of Dy3+ ions in calcium fluoroborate glasses

被引：242

作者：

Kumar, J. Suresh ^{[1
]}

Pavani, K. ^{[1
]}

Babu, A. Mohan ^{[1
]}

Giri, Neeraj Kumar ^{[2
]}

Rai, S. B. ^{[2
]}

Moorthy, L. Rama ^{[1
]}

机构：

[1] Sri Venkateswara Univ, Dept Phys, Tirupati 517502, Andhra Pradesh, India

[2] Banaras Hindu Univ, Dept Phys, Laser & Spect Lab, Varanasi 221005, Uttar Pradesh, India

来源：

JOURNAL OF LUMINESCENCE | 2010年 / 130卷 / 10期

关键词：

Glass; Melt quenching; J-O theory; Energy transfer; Chromaticity coordinates; RARE-EARTH IONS; SPECTROSCOPIC PROPERTIES; SM3+ IONS; ABSORPTION INTENSITIES; SPECTRAL INTENSITIES; OPTICAL-TRANSITIONS; BORATE GLASSES; LUMINESCENCE; LANTHANIDES; PHOSPHATE;

D O I：

10.1016/j.jlumin.2010.05.006

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Calcium fluoroborate (CFB) glasses doped with different concentrations of trivalent dysprosium ions were prepared and investigated by the FTIR, optical absorption, photoluminescence and decay analysis. Free-ion Hamiltonian model and Judd-Ofelt theory have been used to analyze the energy level scheme and the spectral intensities of Dy3+ ions in CFB glasses. From the emission spectra it is observed that the samples emit intense light yellowish color which is nearer to white light. Chromaticity color coordinates have been calculated and the dominant emission wavelength has also been indicated. Decay curves of F-4(9/2) level for the samples with different concentrations have been analyzed using the Inokuti-Hirayama model and the energy transfer and non-radiative decay rates have been determined. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1916 / 1923

页数：8

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