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  • LUMIN_2019_1968_Revision 1_V0_R1

    Rights statement: 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

    Accepted author manuscript, 8.39 MB, PDF document

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

Research output: Contribution to journalJournal articlepeer-review

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  • Haitao Zhu
  • Renli Fu
  • Yahui Shi
  • Qinjiang He
  • He Wang
  • Xuhai Liu
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Article number117057
<mark>Journal publication date</mark>31/05/2020
<mark>Journal</mark>JOURNAL OF LUMINESCENCE
Volume221
Number of pages6
Publication StatusPublished
Early online date16/01/20
<mark>Original language</mark>English

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.

Bibliographic note

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