A Promising Orange-Red Nanocrystalline Potassium Lanthanum Orthophosphate for White Light-Emitting Diodes | Zendy

Palvi Gupta | Zendy; A.K. Bedyal | Zendy; Vinay Kumar | Zendy; Yugal Khajuria | Zendy; O.M. Ntwaeaborwa | Zendy; H.C. Swart | Zendy

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A Promising Orange-Red Nanocrystalline Potassium Lanthanum Orthophosphate for White Light-Emitting Diodes

Author(s) -

Palvi Gupta,

A.K. Bedyal,

Vinay Kumar,

Yugal Khajuria,

O.M. Ntwaeaborwa,

H.C. Swart

Publication year - 2014

Publication title -

indian journal of materials science

Language(s) - English

Resource type - Journals

ISSN - 2314-7490

DOI - 10.1155/2014/794680

Subject(s) - phosphor , nanocrystalline material , monoclinic crystal system , materials science , transmission electron microscopy , ion , lanthanum , analytical chemistry (journal) , spectroscopy , diffraction , optoelectronics , crystal structure , crystallography , chemistry , nanotechnology , optics , inorganic chemistry , physics , organic chemistry , chromatography , quantum mechanics

The spectral properties of the K3La(PO4)2:Eu3+ nanophosphors synthesized by the combustion method are reported. The phosphors were characterized by X-ray diffraction, transmission electron microscopy, and optical spectroscopy. The XRD pattern reveals a pure monoclinic phase of the K3La(PO4)2 with the average particle size of 30 nm in diameter. Under UV excitation, the phosphors exhibited several emission bands which were assigned to 4f-4f transitions of Eu3+ ions. The red shade of the Eu3+ ion with the CIE coordinates (x, y) as (0.63, 0.37) suggests that this material is a promising phosphor for near-UV InGaN-based LED lighting

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