Issue 24, 2015

The novel design of a remote phosphor ceramic plate for white light generation in high power LEDs

Abstract

Here, we report a phosphor ceramic plate (PCP) constructed using Y3Al5O12:Ce3+ (YAG:Ce) nanoparticles (NPs) with a uniformly spherical size distribution for high-power light emitting diode (LED) applications. YAG:Ce NPs with diameters of 600 nm were synthesized using the forced hydrolysis method, and the typical excitation and emission of the PCP constructed using YAG:Ce NPs were observed on blue light emitting InGaN chips, as a conversion process for the generation of white LEDs with high luminous flux and thermal stability. In addition, for the improvement of the PCP characteristics, a novel design using graphene-embedded red phosphor (GRP) layer was utilized. The GRP-coated PCP displayed a higher CRI value of 82 and warm white light with a correlated colour temperature (CCT) of 3952 K compared to the general PCP. This type of PCP is expected to be an outstanding candidate for the production of luminescent materials in various fields of optoelectronics.

Graphical abstract: The novel design of a remote phosphor ceramic plate for white light generation in high power LEDs

Supplementary files

Article information

Article type
Communication
Submitted
31 Mar 2015
Accepted
27 Apr 2015
First published
27 Apr 2015

J. Mater. Chem. C, 2015,3, 6148-6152

Author version available

The novel design of a remote phosphor ceramic plate for white light generation in high power LEDs

Y. H. Song, G. S. Han, E. K. Ji, M. Lee, Y. L. Song, D. S. Kong, M. K. Jung, B. W. Jeong, H. S. Jung and D. Yoon, J. Mater. Chem. C, 2015, 3, 6148 DOI: 10.1039/C5TC00893J

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