Study on Efficient Blue and White Organic Light-emitting Devices

WANG Zhen; CHEN Shuang-wen; Zhou Xiang

doi:10.3788/fgxb20113207.0715

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Study on Efficient Blue and White Organic Light-emitting Devices

paper | 更新时间：2020-08-12

- Study on Efficient Blue and White Organic Light-emitting Devices
- Chinese Journal of Luminescence Vol. 32, Issue 7, Pages: 715-719(2011)
- 作者机构：
  
  中山大学光电材料与技术国家重点实验室,广东广州,510275
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20113207.0715
  CLC： TN383.1;TN873.3
- Received：01 March 2011，
  
  Revised：24 May 2011，
  
  Published Online：22 July 2011，
  
  Published：22 July 2011
- 稿件说明：
移动端阅览
王振, 陈双文, 周翔. 高效率有机蓝光和白光电致发光器件[J]. 发光学报, 2011,32(7): 715-719

WANG Zhen, CHEN Shuang-wen, ZHOU Xiang. Study on Efficient Blue and White Organic Light-emitting Devices[J]. Chinese Journal of Luminescence, 2011,32(7): 715-719
王振, 陈双文, 周翔. 高效率有机蓝光和白光电致发光器件[J]. 发光学报, 2011,32(7): 715-719 DOI： 10.3788/fgxb20113207.0715.

WANG Zhen, CHEN Shuang-wen, ZHOU Xiang. Study on Efficient Blue and White Organic Light-emitting Devices[J]. Chinese Journal of Luminescence, 2011,32(7): 715-719 DOI： 10.3788/fgxb20113207.0715.

摘要

以蓝光材料FIrpic同时掺杂空穴传输层TCTA和电子传输层TPBI

制备了具有双发光层的高效率蓝光器件(D-BOLED)

D-BOLED最大发光效率达23.4 cd/A

比单发光层蓝光器件(S-BOLED)提高了约36.8%。这是因为双发光层结构能够更有效地利用扩散到激子复合界面两边载流子传输层的三线态激子。结合基于DCJTB的颜色转换层

实现了色坐标为(0.33

0.33)、最大效率为10.7 cd/A的白光发射。

Abstract

We have demonstrated efficient blue electrophosphorescent organic light-emitting diodes (PHOLEDs) with double light-emitting layers (D-BOLED)

by doping both hole and electron transport layers with iridium(Ⅲ) bis picolinate (FIrpic)

simultaneously. The D-BOLED showed a peak efficiency of 23.4 cd/A

which was improved about 36.8% compared to the conventional blue PHOLEDs with a single light-emitting layer (S-BOLED)

by doping either hole or electron transport layer with FIrpic. We have attributed this improvement mainly to that the D-BOLED can efficiently use the triplet excitons that were generated by carrier recombination at the interface of FIrpic ∶ TCTA/ FIrpic ∶ TPBI and diffused into FIrpic doped charge transport layers and subsequently decayed radiatively on FIrpic sites.Combining a DCJTB doped color conversion layer with the D-BOLED

we have achieved a WOLEDs with a peak efficiency of 10.7 cd/A and CIE coordinate of (0.33

0.33).

关键词

Keywords

references

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