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Issue 89, 2016, Issue in Progress
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A review on Mn4+ activators in solids for warm white light-emitting diodes

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Abstract

Currently, the major commercial white light-emitting diodes consist of a blue-emitting chip and Y3Al5O12:Ce3+ yellow phosphor. However, the shortage of a red emitting component in the constructed device makes it difficult to realize warm white light with a high color-rendering index and low correlated color temperature. In this mini-review article, we provide an overview of recent progresses in developing Mn4+ doped red phosphors for promising applications in warm white light-emitting diodes. Firstly, the spectroscopic properties of Mn4+ in solids, including electronic and vibronic energy-level structures, crystal-field parameters as well as thermal stability, were briefly discussed. And then the related physical and chemical synthesis strategies were introduced in detail. Afterwards, Mn4+ doped phosphors, such as oxides, fluorides as well as glass ceramic composites, and their impact on improving the photoelectric performance of white light-emitting diodes were summarized. Finally, several challenges and perspectives for exploring novel and high-performance Mn4+ doped red phosphors will be presented.

Graphical abstract: A review on Mn4+ activators in solids for warm white light-emitting diodes

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Article information


Submitted
03 Aug 2016
Accepted
05 Sep 2016
First published
05 Sep 2016

RSC Adv., 2016,6, 86285-86296
Article type
Review Article

A review on Mn4+ activators in solids for warm white light-emitting diodes

D. Chen, Y. Zhou and J. Zhong, RSC Adv., 2016, 6, 86285
DOI: 10.1039/C6RA19584A

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