The Spectral and Junction Temperature Properties of New White Light LED

HU Chang-qi; ZHANG Fang-hui; ZHANG Jing

doi:10.3788/fgxb20123309.0939

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The Spectral and Junction Temperature Properties of New White Light LED

更新时间：2020-08-12

- The Spectral and Junction Temperature Properties of New White Light LED
- Chinese Journal of Luminescence Vol. 33, Issue 9, Pages: 939-943(2012)
- 作者机构：
  
  陕西科技大学电气与信息工程学院,陕西西安,710021
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20123309.0939
  CLC： O482.31
- Received：12 April 2012，
  
  Revised：25 May 2012，
  
  Published：10 September 2012
- 稿件说明：
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胡长奇, 张方辉, 张静. 新型白光LED的光谱特性和相关结温特性[J]. 发光学报, 2012,33(9): 939-943

HU Chang-qi, ZHANG Fang-hui, ZHANG Jing. The Spectral and Junction Temperature Properties of New White Light LED[J]. Chinese Journal of Luminescence, 2012,33(9): 939-943
胡长奇, 张方辉, 张静. 新型白光LED的光谱特性和相关结温特性[J]. 发光学报, 2012,33(9): 939-943 DOI： 10.3788/fgxb20123309.0939.

HU Chang-qi, ZHANG Fang-hui, ZHANG Jing. The Spectral and Junction Temperature Properties of New White Light LED[J]. Chinese Journal of Luminescence, 2012,33(9): 939-943 DOI： 10.3788/fgxb20123309.0939.

摘要

利用蓝光LED芯片激发[Ru(dtb-bpy)

]

(PF

)

和YAG混合荧光粉的方法制备了新型白光LED

研究了随着[Ru(dtb-bpy)

]

(PF

)

含量的增加而引起的白光LED光谱特性的变化。当[Ru(dtb-bpy)

]

(PF

)

的质量分数为1.5%时

白光LED的显色指数达到83.2

效率相对于其含量为0%时下降了约20%。另外

研究了结温对于一体化封装的该新型白光LED发光特性的影响

结果表明:高显色LED的结温从30 ℃上升到130 ℃的过程中

芯片的蓝光辐射出现了较大幅度的减少

共降低了27.73%

随之也导致该白光LED总发光强度的衰减

而且其发光效率出现了大幅度的下降

共衰减了31.76%

但是其显色性没有明显的变化。

Abstract

A new white LED was fabricated by irradiated the mixed fluorescent powder which contained [Ru(dtb-bpy)

]

(PF

)

and YAG. The relationship between white LED' spectral and the [Ru(dtb-bpy)

]

(PF

)

content were investigated. When the mass fraction of [Ru(dtb-bpy)

]

(PF

)

was 1.5%

the White LED color-rending index reached 83.2 and its luminous efficiency was about 20% lower than those without [Ru(dtb-bpy)

]

(PF

)

. Moreover

we studied the influence of junction temperature on the luminous properties of the integration package white LED. The results showed that the blue chip radiation reduced about 27.73% during LED's junction temperature rising from 30 ℃ to 130 ℃. The white LED light intensity decreased and the luminous efficiency reduced 31.76%

while the color-rending was stability.

关键词

Keywords

references

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