Journal
MATERIALS LETTERS
Volume 189, Issue -, Pages 160-163Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2016.12.002
Keywords
Phosphors; Crystal growth; Optical materials and properties; Luminescence
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A novel green emitting phosphor, Terbium oxalate decahydrate, was synthesized in crystalline form employing the hydro silica gel method. The structure of the sample was confirmed by x-ray diffraction analysis. Photoluminescence excitation spectrum of the sample show several peaks in the deep UV to Visible region, matching well with the commercially available LED sources. Emission spectrum, recorded with representative excitation wavelengths revealed efficient luminescence, particularly the green emission at 543 nm. The decay time of the sample was measured to be 0.81 ms. It exhibits a colour purity of 68% with chromaticity coordinates (0.31, 0.57) which is very close to that of the European Broadcasting Union illuminant green. (C) 2016 Elsevier B.V. All rights reserved.
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