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Combustion synthesis and characterisation of Eu3+-activated Y2O3 red nanophosphors for display device applications

Halappa, Pramod and Raj, Thilak S and Sairani, R and Joshi, Siddharth and Madhusudhana, R and Shivakumara, C (2017) Combustion synthesis and characterisation of Eu3+-activated Y2O3 red nanophosphors for display device applications. In: INTERNATIONAL JOURNAL OF NANOTECHNOLOGY, 14 (9-11, ). pp. 833-844.

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Official URL: http://doi.org/10.1504/IJNT.2017.086767

Abstract

Europium activated yttrium oxide red phosphors have gathered more attention because of their good luminescent characteristics, acceptable atmospheric stability, reduced degradation under applied voltages, and lack of hazardous constituents. In order to achieve improved luminescent properties of Y2O3: Eu3+, the synthetic methods are playing an important role. In the present study, Eu3+ (2 mol %) doped Y2O3 nanophosphors were synthesised by the facile nitrate citrate gel combustion method at relatively low temperature and shorter duration (700 degrees C for 2 h). Further samples were characterised by powder X-ray diffraction (XRD) technique. The morphology and particle size of the phosphors were studied by scanning electron microscope (SEM), UV reflectance spectroscopy and Raman spectroscopy. The photoluminescence measurements of the Y(2)O3: Eu3+ particles showed red emission peaks at 610-612 nm (D-5(0) -> F-7(2)). CIE chromaticity diagram and CCT calculations confirmed that these nanophosphors can act as a red component in the fabrication of white light emitting diodes (WLEDs) for display and other optical device applications.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the INDERSCIENCE ENTERPRISES LTD, WORLD TRADE CENTER BLDG, 29 ROUTE DE PRE-BOIS, CASE POSTALE 856, CH-1215 GENEVA, SWITZERLAND
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Depositing User: Id for Latest eprints
Date Deposited: 01 Dec 2017 06:49
Last Modified: 01 Dec 2017 06:49
URI: http://eprints.iisc.ac.in/id/eprint/58370

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