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Journal of Materials Science: Materials in Electronics
Published in:

11-08-2016

Role of rhodamine-B dye encapsulated mesoporous SiO2 in color tuning of SrAl2O4:Eu2+,Dy3+ composite long lasting phosphor

Authors: Sourav Das, J. Manam, S. K. Sharma

Published in: Journal of Materials Science: Materials in Electronics | Issue 12/2016

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Abstract

A novel color tunable dye encapsulated mesoporous SiO2/SrAl2O4:Eu2+,Dy3+ composite long lasting phosphor (LLP) is developed. The color tuning was obtained by mixing the SrAl2O4:Eu2+,Dy3+ (SAO) phosphor with rhodamine-B encapsulated mesoporous silica nanoparticles (MSNp-RhB) with an appropriate ratio. The photoluminescence emission spectra, phosphorescence spectra, photometric and phosphorescence decay measurement were utilized to characterize the composite phosphor. The composite LLP can be excited by UV lamp and also visible light due to broad excitation spectrum of SAO. A near white light emission was achieved with color co-ordinates (0.34, 0.39) and color temperature 5267 K. The detailed process is described here. The nature of phosphorescence decay of the composite LLP did not change with time which ensures constant and steady color during the decay process. The results indicate that the composite LLP can be potentially applicable as a new long lasting phosphor used in the field of emergency light, display, luminous paint and light emitting diode applications.
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Metadata
Title
Role of rhodamine-B dye encapsulated mesoporous SiO2 in color tuning of SrAl2O4:Eu2+,Dy3+ composite long lasting phosphor
Authors
Sourav Das
J. Manam
S. K. Sharma
Publication date
11-08-2016
Publisher
Springer US
Published in
Journal of Materials Science: Materials in Electronics / Issue 12/2016
Print ISSN: 0957-4522
Electronic ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-016-5468-3

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