Enhancement of the luminescence intensity by co-doping Mn2+ into Er3+-doped SrAl2O4
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Date
2015
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Abstract
Structural and optical properties of erbium- and manganese-doped strontium aluminates (SrAl2O4) phosphor materials synthesized by a solid state reaction were investigated. The samples presented the fundamental optical transitions due to Er3+ and Mn2+ which are typical features of the well-diluted doping process. A significant enhancement of the Er3+ optical emission band at 1530 nm was observed when the matrix is co-doped with Mn. Photoluminescence intensity under ultraviolet excitation was three times larger as compared to samples without Mn content. A model of energy transfer mechanism from Mn2+ to Er3+ ions due to optical energy matching is proposed to explain the experimental results. This result, presented first time, can be applied as useful tool for developments in optical communications. © 2015 Elsevier B.V. All rights reserved.
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Keywords
Aluminum compounds , Energy transfer , Erbium , Light amplifiers , Light emission , Luminescence , Optical communication , Optical properties , Rare earths , Solid state reactions , Energy transfer mechanisms , Luminescence intensity , Phosphor materials , Photoluminescence intensities , , Strontium aluminate , Structural and optical properties , Ultra violet excitation , Manganese