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Title: NIR to visible upconversion emission in Tm{sup 3+} doped Na{sub 2}Y{sub 2}B{sub 2}O{sub 7} powder phosphor

Tm{sup 3+} ions doped Na{sub 2}Y{sub 2}B{sub 2}O{sub 7} powder phosphor has been synthesized through combustion method. Crystal structure and phase of the prepared sample have been investigated by powder X-ray diffraction (XRD) analysis. Upconversion emission bands in the 400-900 nm range under the excitation of 980nm diode laser have been acquired, and involved upconversion mechanism has been discussed with the help of a suitable energy level diagram. The colour coordinate of developed phosphor has been calculated by CIE chromaticity diagram. Present phosphor can be used in fabrication of upconverting LEDs.
Authors:
;  [1]
  1. Laser and Spectroscopy Laboratory, Department of Applied Physics, Indian School of Mines, Dhanbad-826004, Jharkhand (India)
Publication Date:
OSTI Identifier:
22391759
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1661; Journal Issue: 1; Conference: ICCMP 2014: International Conference on Condensed Matter Physics 2014, Shimla (India), 4-6 Nov 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BORATES; CRYSTAL STRUCTURE; DOPED MATERIALS; EMISSION SPECTRA; ENERGY LEVELS; EXCITATION; FABRICATION; INORGANIC PHOSPHORS; NEAR INFRARED RADIATION; POWDERS; SODIUM COMPOUNDS; THULIUM IONS; VISIBLE RADIATION; X-RAY DIFFRACTION; YTTRIUM COMPOUNDS