The Difference of Luminous Performance Between Traditional Phosphor Packaging LED and Remote Phosphor LED

XIAO Hua; LYU Yi-jun; XU Yun-xin; ZHU Li-hong; CHEN Guo-long; GAO Yu-lin; FAN Xian-guang; X

doi:10.3788/fgxb20143501.0066

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The Difference of Luminous Performance Between Traditional Phosphor Packaging LED and Remote Phosphor LED

更新时间：2020-08-12

- The Difference of Luminous Performance Between Traditional Phosphor Packaging LED and Remote Phosphor LED
- Chinese Journal of Luminescence Vol. 35, Issue 1, Pages: 66-72(2014)
- 作者机构：
  
  厦门大学电子科学系福建省半导体照明工程技术研究中心,福建厦门,361005
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20143501.0066
  CLC： O482.31
- Received：24 July 2013，
  
  Revised：26 October 2013，
  
  Published：03 January 2014
- 稿件说明：
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肖华, 吕毅军, 徐云鑫, 朱丽虹, 陈国龙, 高玉琳, 范贤光, 薛睿超. 传统白光LED与远程荧光粉白光LED的发光性能比较[J]. 发光学报, 2014,35(1): 66-72

XIAO Hua, LYU Yi-jun, XU Yun-xin, ZHU Li-hong, CHEN Guo-long, GAO Yu-lin, FAN Xian-guang, XUE Rui-chao. The Difference of Luminous Performance Between Traditional Phosphor Packaging LED and Remote Phosphor LED[J]. Chinese Journal of Luminescence, 2014,35(1): 66-72
肖华, 吕毅军, 徐云鑫, 朱丽虹, 陈国龙, 高玉琳, 范贤光, 薛睿超. 传统白光LED与远程荧光粉白光LED的发光性能比较[J]. 发光学报, 2014,35(1): 66-72 DOI： 10.3788/fgxb20143501.0066.

XIAO Hua, LYU Yi-jun, XU Yun-xin, ZHU Li-hong, CHEN Guo-long, GAO Yu-lin, FAN Xian-guang, XUE Rui-chao. The Difference of Luminous Performance Between Traditional Phosphor Packaging LED and Remote Phosphor LED[J]. Chinese Journal of Luminescence, 2014,35(1): 66-72 DOI： 10.3788/fgxb20143501.0066.

摘要

研究了传统白光LED与蓝光激发的球冠形远程荧光粉白光LED在不同电流、不同热沉温度下的发光性能，并对其机理差异展开了探讨。实验结果表明：随热沉温度和驱动电流的上升，传统白光LED的量子效率和电光转换效率急剧下降，并导致其Y/B比（Yellow/Blue Ratio）下降，相关色温上升。而在远程荧光粉白光LED中，其量子效率、光转换效率和相关色温在相同实验条件下变化幅度都较小。由光强空间分布和Y/B比空间分布可知，远程荧光粉白光LED的光强分布呈类似蝠翼分布，且Y/B比空间均匀性远大于传统白光LED。

Abstract

Under different drive current and heat sink temperature

luminous performances as well as physical mechanisms were studied for both traditional phosphor-dispensing packaging white LED and blue light-converting hemisphere remote phosphor LEDs. With the increase of the heat sink temperature and the drive currents

the quantum efficiency and light conversion efficiency in the traditional phosphor-dispensing packaging white LED drop rapidly

which is responsible for the decrease of Y/B ratio (Yellow/Blue Ratio) and the apparent increase of CCT (correlated color temperature). However

the parameters of quantum efficiency

light conversion efficiency and CCT in blue light-converting hemisphere remote-phosphor packaging LEDs have little change under the same experimental conditions. In addition

the remote phosphor LEDs exhibit a batwing spatial luminous intensity distribution and the spatial Y/B ratio distribution is much more homogeneous compared with the traditional phosphor-dispensing packaging white LED.

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references

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