Investigation on The Direct Charge-recombination Mechanism of Ir(ppy)3 in OLED

DU Xiao-gang; WANG Hua; LIU Hui-hui; MIAO Yan-qin; JING Shu

doi:10.3788/fgxb20143504.0481

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Investigation on The Direct Charge-recombination Mechanism of Ir(ppy)₃ in OLED

更新时间：2020-08-12

- Investigation on The Direct Charge-recombination Mechanism of Ir(ppy)₃ in OLED
- Chinese Journal of Luminescence Vol. 35, Issue 4, Pages: 481-485(2014)
- 作者机构：
  
  1. 太原理工大学新材料工程技术研究中心,山西太原,030024
  2. 太原理工大学新材料界面科学与工程教育部重点实验室,山西太原,030024
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20143504.0481
  CLC： TN383+.1
- Received：25 December 2013，
  
  Revised：07 February 2014，
  
  Published Online：03 January 2014，
  
  Published：03 April 2014
- 稿件说明：
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杜晓刚, 王华, 刘慧慧等. 基于Ir(ppy)3载流子直接复合发光的OLED机理研究[J]. 发光学报, 2014,35(4): 481-485

DU Xiao-gang, WANG Hua, LIU Hui-hui etc. Investigation on The Direct Charge-recombination Mechanism of Ir(ppy)3 in OLED[J]. Chinese Journal of Luminescence, 2014,35(4): 481-485
杜晓刚, 王华, 刘慧慧等. 基于Ir(ppy)3载流子直接复合发光的OLED机理研究[J]. 发光学报, 2014,35(4): 481-485 DOI： 10.3788/fgxb20143504.0481.

DU Xiao-gang, WANG Hua, LIU Hui-hui etc. Investigation on The Direct Charge-recombination Mechanism of Ir(ppy)3 in OLED[J]. Chinese Journal of Luminescence, 2014,35(4): 481-485 DOI： 10.3788/fgxb20143504.0481.

摘要

针对载流子在面式-三（2-苯基吡啶基-

N，C

）铱（Ⅲ）（Ir（ppy）

）上的聚集会对器件性能产生不良影响，在发光层中分别掺入4% 的双（2-（4，6-二氟苯基）吡啶基-N，C

）铱（Ⅲ）（吡啶-2-羧基）配合物（FIrpic）和4% 的4，4，4"-三（咔唑-9-基）三苯胺（TCTA），器件的性能有明显的提高，最高电流效率分别达到51 cd/A和43.1 cd/A，提高约79%和50%，我们将器件效率的提高归因于TCTA和FIrpic可以使聚集在Ir（ppy）

界面的空穴向主体材料4，4-二（咔唑-9-基）联苯（CBP）转移，进而可减弱对激子的猝灭作用。

Abstract

We present a simple efficient green phosphorescent device based on the direct charge-recombination mechanism in heavy doping Ir(ppy)

. The 4

4"-Tris(carbazol-9-yl)triphenylamine (TCTA) and bis (4

6-difluorophenyl-pyridine)(picolinate) iridium(Ⅲ) (FIrpic) are selected as doping materials that doped into emitting layer respectively. The maximum current efficiency values of 43.1 cd/A and 51 cd/A are demonstrated in these devices

which increased by 50% and 79%

respectively. The results reveal a practical way to fabricate highly efficient bilayer organic devices.

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Keywords

references

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