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Red Phosphor Rb 2 NbOF 5:Mn 4+ for Warm White Light-Emitting Diodes with a High Color-Rendering Index

Red Phosphor Rb 2 NbOF 5:Mn 4+ for Warm White Light-Emitting Diodes with a High Color-Rendering Index

Zhengliang Wang, Zhiyu Yang, Zhaofeng Yang, Qianwen Wei, Qiang Zhou, Li Ma, Xiaojun Wang

Inorg Chem. 2019 Jan 7;58(1):456-461.

PMID: 30532972

Abstract:

We successfully prepared a red-emitting phosphor Rb2NbOF5 doped with Mn4+, and investigated its crystal structure, luminescent properties, and applications in detail. Mn4+ ions in Rb2NbOF5 exhibit an intense red emission with high color purity upon a broad excitation in the blue region. The related crystal-field parameters of Mn4+ in Rb2NbOF5 have been estimated according to the luminescent spectra. More importantly, Rb2NbOF5:Mn4+ has high thermal-quenching resistance and color stability. We further fabricated a warm white light-emitting diode using the phosphor, emitting intense white light with a high color-rendering index of 90 and a low color temperature of 3418 K. The results indicate that Rb2NbOF5:Mn4+ is a potential red-emitting phosphor for white light-emitting diodes.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP1365250367	Red light-emitting spiro-copolymer		1365250-36-7	Price

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