Fabrication Technology of LED Remote Fluorescent Sheets Based on Electrostatic Spinning Process

NIU Ping-juan; XUE Wei-fang; NING Ping-fan; WANG Xue-fei; WU Ying-lei; ZHU Wen-rui

doi:10.3788/fgxb20163705.0567

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Fabrication Technology of LED Remote Fluorescent Sheets Based on Electrostatic Spinning Process

更新时间：2020-08-12

- Fabrication Technology of LED Remote Fluorescent Sheets Based on Electrostatic Spinning Process
- Chinese Journal of Luminescence Vol. 37, Issue 5, Pages: 567-572(2016)
- 作者机构：
  
  1. 天津工业大学电气工程与自动化学院天津,300387
  2. 天津工业大学电子与信息工程学院天津,300387
  3. 天津工业大学大功率半导体照明应用系统教育部工程研究中心天津,300387
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20163705.0567
  CLC： O482.31
- Received：18 November 2015，
  
  Revised：10 March 2016，
  
  Published：05 May 2016
- 稿件说明：
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牛萍娟, 薛卫芳, 宁平凡等. 基于静电纺丝工艺的LED远程荧光片制备技术[J]. 发光学报, 2016,37(5): 567-572

NIU Ping-juan, XUE Wei-fang, NING Ping-fan etc. Fabrication Technology of LED Remote Fluorescent Sheets Based on Electrostatic Spinning Process[J]. Chinese Journal of Luminescence, 2016,37(5): 567-572
牛萍娟, 薛卫芳, 宁平凡等. 基于静电纺丝工艺的LED远程荧光片制备技术[J]. 发光学报, 2016,37(5): 567-572 DOI： 10.3788/fgxb20163705.0567.

NIU Ping-juan, XUE Wei-fang, NING Ping-fan etc. Fabrication Technology of LED Remote Fluorescent Sheets Based on Electrostatic Spinning Process[J]. Chinese Journal of Luminescence, 2016,37(5): 567-572 DOI： 10.3788/fgxb20163705.0567.

摘要

首次提出了一种基于静电纺丝工艺以柔性PET为基底的新型LED远程荧光片的制备方法

实现了蓝色LED芯片与荧光粉层相分离的免封装器件结构。采用静电纺丝工艺制备了黄色荧光片和红色荧光片

并研究了黄色荧光片的透射率、吸收率、PL谱及红色荧光片对白光LED的光学性能参数的影响

包括光通量、相关色温、光效。实验结果表明

所制备黄色荧光片在可见光波段具有良好的透光性

荧光片的光谱完全由荧光粉来决定

不需要考虑复杂工艺的影响;使用红色荧光片可以在保持高光效的同时将球泡灯的相关色温由5595 K降低为3214 K

这在曲面发光及色温调节方面为灯具设计提供了广阔的空间。

Abstract

A new method of preparing the LED remote fluorescent sheet based on the electrostatic spinning process with flexible PET substrate is proposed

and the free package device structure is realized by separating the blue chip and the phosphor layer. Electrostatic spinning process is a new technology to prepare fluorescent sheet with high performance

which can effectively solve the problem of uneven distribution of fluorescent powder. The yellow and red fluorescent sheets were prepared by electrostatic spinning process. The transmittance

absorption rate

PL spectra of yellow fluorescent sheet were studied. The effect of red fluorescent sheet on the optical performance parameters of white LED

including the luminous flux

correlated color temperature and luminous efficiency

was also studied. Experimental results show that the prepared yellow fluorescent sheets have good light transmission in the visible band. Fluorescent spectrum is completely determined by the fluorescent powder

so we do not need to consider the influence of complex processes. Using red fluorescent sheet can keep high efficiency and decrease the correlated color temperature of the bulbs from 5595 K to 3214 K at the same time

which provides more chance for the design of lamps and lanterns in luminescence of curved surface and regulation of color temperature. With the continuous improvement of the technology

the remote fluorescent technology based on the electrostatic spinning process will be more perfect

the performance of the product will be further improved

and the pace of the white LED going into the lighting field is promoted.

关键词

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references

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