Multi-colour light emission based on pixel-array phosphor layer in LEDs

Zhu, Haitao and Fu, Renli and Shi, Yahui and He, Qinjiang and Wang, He and Liu, Xuhai (2020) Multi-colour light emission based on pixel-array phosphor layer in LEDs. JOURNAL OF LUMINESCENCE, 221: 117057. ISSN 0022-2313

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Abstract

Phosphor layers are of vital importance for the development of advanced phosphor-converted light-emitting diodes (LEDs). However, owing to the fixed ratio of red-green-blue (RGB) phosphors, it has been difficult for the RGB phosphor layers with conventional structure to tune light emission colours. Herein, we have experimentally fabricated nine types of phosphor layers with patterned RGB pixel array, which consist of tuneable RGB ratio in a planar configuration. Moreover, we carried out optical simulation based on Monte-Carlo theory to assist in adjusting the light-emission colours and the corresponding chromaticity coordinates. The simulations were further verified by the experimental results via samples fabricated by the stencil printing technique. In accordance with the nine types of phosphor layers with patterned pixel arrays in various RGB ratios, we have finally obtained corresponding nine light-emission colours for the applications of LED light emission decoration. These designed advanced pixel-array phosphor layers demonstrate great potential for applications in decorated light emission and display devices with significant implications for industrial improvement in these research areas.

Item Type:

Journal Article

Journal or Publication Title:

JOURNAL OF LUMINESCENCE

Additional Information:

This is the author’s version of a work that was accepted for publication in Journal of Luminescence. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Luminescence, 221, 2021 DOI: 10.1016/j.jlumin.2020.117057

Uncontrolled Keywords:

/dk/atira/pure/subjectarea/asjc/1300/1303

Subjects:

?? phosphor layerstencil printingmulti-colour light emissionpixel arraybiochemistrybiophysicsatomic and molecular physics, and opticsgeneral chemistrycondensed matter physicschemistry(all) ??

Departments:

Faculty of Science and Technology > Engineering

ID Code:

158970

Deposited By:

ep_importer_pure

Deposited On:

01 Sep 2021 08:55

Refereed?:

Yes

Published?:

Published