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Synthesis of non-toxic phosphor material based on pyrochlore-type dititanate (Eu3+/Y2Ti2O7)

Paper ID Volume ID Publish Year Pages File Format Full-Text
26787 43977 2015 5 PDF Available
Title
Synthesis of non-toxic phosphor material based on pyrochlore-type dititanate (Eu3+/Y2Ti2O7)
Abstract

•New phosphor powder based on europium doped yttrium titanate.•The powder acts as good phosphor material with an orange red emission.•The phosphor is non-toxic.

New photoluminescent, non-toxic europium doped yttrium titanate phosphors (x mol% Eu3+/Y2Ti2O7 where x = 1.0, 2.0, 4.0 6.0, 10, 15 and 30 mol%) with high crystalline structure were synthesized by sol–gel followed by heat treatment at 1000 °C for 5 h. Eu3+/Y2Ti2O7 phosphors were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS), FT-IR and photoluminescence (PL) spectroscopy. The effects of heat treatment and europium metal ion concentration on the structure and PL properties were investigated. Eu3+/Y2Ti2O7 phosphors exhibited micro spherical shape with average crystal size from 90 to 144 nm. The PL spectra showed the orange red emission bands of Eu3+ in highly symmetrical host. The longest PL lifetime was detected at 4 mol% Eu3+/Y2Ti2O7 phosphor. The toxicity of 15 mol% Eu3+:Y2Ti2O7 was tested. The obtained result showed LD50 is 3.2 g/kg. The PL and toxicity properties of the prepared phosphors make them promising materials for the future optical and biological applications.

Keywords
Lanthanide; Phosphor; Y2Ti2O7; Toxicity
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Synthesis of non-toxic phosphor material based on pyrochlore-type dititanate (Eu3+/Y2Ti2O7)
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 301, 15 March 2015, Pages 1–5
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us