Optical properties and generation of white light in Dy3+-doped lead phosphate glasses

被引：149

作者：

Linganna, K. ^{[1
]}

Rao, Ch. Srinivasa ^{[1
]}

Jayasankar, C. K. ^{[1
]}

机构：

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

来源：

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER | 2013年 / 118卷

关键词：

Lead phosphate glasses; Dysprosium; Fluorescence; Lifetime; White light; DY3+ IONS; LUMINESCENCE PROPERTIES; OXYFLUORIDE GLASS; ENERGY-TRANSFER; CRYSTAL; PHOTOLUMINESCENCE; TRANSITIONS; SPECTRA; INTENSITIES; ABSORPTION;

D O I：

10.1016/j.jqsrt.2012.12.002

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Dy3+-doped lead phosphate (PbPKANDy: P2O5 + K2O + Al2O3 + PbO+ Na2O + Dy2O3) glasses were prepared by melt quenching technique and their optical properties have been studied. Judd-Ofelt parameters have been evaluated for 1.0 mol% Dy2O3-doped lead phosphate glass and inturn derived radiative properties for excited luminescent levels of Dy3+ ions. The yellow-to-blue emission intensity ratios and CIE chromaticity coordinates were calculated which have been used to evaluate white light emission as a function of the activator (Dy3+) ion concentration. The observed non-exponential decay nature and quenching of lifetime for higher Dy3+ ion concentration (>= 1.0 mol%) have been attributed due to energy transfer of dipole-dipole type between excited and unexcited Dy3+ ions. The PbPKANDy glasses exhibit better luminescence properties which are suitable for generation of white light. (c) 2012 Elsevier Ltd. All rights reserved.

引用

页码：40 / 48

页数：9

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