Blue Organic Light-emitting Devices with Low Roll-off and Stable Spectra

QU Jia-wei; MU Xiao-ling; LIANG Xu-xu; GUO Yong-lin; ZHAO Yi

doi:10.3788/fgxb20153609.1022

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Blue Organic Light-emitting Devices with Low Roll-off and Stable Spectra

更新时间：2020-08-12

- Blue Organic Light-emitting Devices with Low Roll-off and Stable Spectra
- Chinese Journal of Luminescence Vol. 36, Issue 9, Pages: 1022-1027(2015)
- 作者机构：
  
  集成光电子学国家重点联合实验室吉林大学电子科学与工程学院,吉林长春,130012
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20153609.1022
  CLC： TN383+.1
- Received：22 April 2015，
  
  Revised：25 July 2015，
  
  Published：03 September 2015
- 稿件说明：
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曲加伟, 穆晓龄, 梁续旭等. 低效率滚降、光谱稳定的蓝光有机发光器件[J]. 发光学报, 2015,36(9): 1022-1027

QU Jia-wei, MU Xiao-ling, LIANG Xu-xu etc. Blue Organic Light-emitting Devices with Low Roll-off and Stable Spectra[J]. Chinese Journal of Luminescence, 2015,36(9): 1022-1027
曲加伟, 穆晓龄, 梁续旭等. 低效率滚降、光谱稳定的蓝光有机发光器件[J]. 发光学报, 2015,36(9): 1022-1027 DOI： 10.3788/fgxb20153609.1022.

QU Jia-wei, MU Xiao-ling, LIANG Xu-xu etc. Blue Organic Light-emitting Devices with Low Roll-off and Stable Spectra[J]. Chinese Journal of Luminescence, 2015,36(9): 1022-1027 DOI： 10.3788/fgxb20153609.1022.

摘要

将多个(Ir(ppz)

:FIrpic

1nm)薄层对称地插入发光区(mCP:FIrpic)中形成周期性结构

研究了该结构对蓝光有机发光器件性能的影响。结果表明

这种结构有效地抑制了发光区位置的漂移

减小了效率滚降

提高了光谱的稳定性;同时增强了载流子的直接俘获复合

提高了器件的效率。相对于无周期性发光层结构的器件

最大电流效率从16.55cd/A提高到20.70cd/A

最大功率效率从14.85lm/W提高到16.26lm/W

效率滚降改善了40%。

Abstract

Blue organic light-emitting devices with periodic doped Ir(ppz)

emission layers were investigated. It effectively inhibited the drift of emission zone

reduced roll-off of efficiency caused by quenching and enhanced the spectral stability. Meanwhile

it enhanced excitation mechanisms of self-recombination by carrier trapping of FIrpic in Ir(ppz)

improved the utilization rate of carriers and efficiency of devices and reduced the leakage of carriers to electrode. Compared with traditional device

the maximal current efficiency and maximal power efficiency were improved from 16.55 cd/A to 20.71 cd/A and from 14.85 lm/W to 16.26 lm/W

respectively

and the efficiency roll-off was improved 40%.

关键词

Keywords

references

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