Haranath, D. and Mishra, S. and Yadav, S. and Sharma, R. K. and Kandpal, L. M. and Vijayan, N. and Dalai, M. K. and Sehgal, G. and Shanker, V. (2012) Rare-earth free yellow-green emitting NaZnPO4:Mn phosphor for lighting applications. Applied Physics Letters, 101 (22). 221905-221910. ISSN 0003-6951

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Abstract

Manganese-doped sodium zinc phosphate (NaZnPO4:Mn) phosphor with exceptional features having ultra-violet (UV) to visible absorption (300-470 nm), yellow-green (similar to 543 nm) broad-band photoluminescence (PL), and appreciable color co-ordinates (x = 0.39, y = 0.58) is reported. It has a crystal structure consisting of discrete PO4 tetrahedra linked by ZnO4 and NaO4 distorted tetrahedral such that three tetrahedra, one of each kind, share one corner. The presence of UV sensitive Zn-O-Zn bonds and their efficient energy transfer to Mn2+ ions resulted in brightest PL and external quantum yield of 63% at 418 nm. Our experiment demonstrated the possibility of producing inexpensive white-light emitting devices for future.

Item Type:	Article
Additional Information:	copyright for this article belongs to M/s American Institute of Physics
Subjects:	Applied Physics/Condensed Matter
Divisions:	UNSPECIFIED
Depositing User:	Users 27 not found.
Date Deposited:	19 Aug 2026 11:03
Last Modified:	19 Aug 2026 11:03
URI:	https://npl.csircentral.net/id/eprint/3445

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