OLED with high performance based on exciplex

Ting NI; Lei DING; Jiang-nan WANG; Shu-ya NING; Fang-hui ZHANG

doi:10.3788/YJYXS20193409.0841

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OLED with high performance based on exciplex

Materials and Devices | 更新时间：2020-07-05

- OLED with high performance based on exciplex
- Chinese Journal of Liquid Crystals and Displays Vol. 34, Issue 9, Pages: 841-848(2019)
- 作者机构：
  
  陕西科技大学材料科学与工程学院, 陕西西安 710021
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20193409.0841
  CLC： TN383.1
- Received：18 March 2019，
  
  Accepted：29 April 2019，
  
  Published：05 September 2019
- 稿件说明：
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Ting NI, Lei DING, Jiang-nan WANG, et al. OLED with high performance based on exciplex[J]. Chinese journal of liquid crystals and displays, 2019, 34(9): 841-848.
DOI：

Ting NI, Lei DING, Jiang-nan WANG, et al. OLED with high performance based on exciplex[J]. Chinese journal of liquid crystals and displays, 2019, 34(9): 841-848. DOI： 10.3788/YJYXS20193409.0841.

摘要

为了得到低驱动电压、高光效的有机电致发光二极管（OLED），本文介绍了一种激基复合物mCP：PO-T2T。首先通过测试mCP、TPBi、PO-T2T、mCP：TPBi和mCP：PO-T2T薄膜的光致发光光谱，确定了mCP：TPBi、mCP：PO-T2T具备激基复合物性能要求，并分别将上述两种激基复合物作为发光层主体，制备器件结构为HATCN（10 nm）/TAPC（40 nm）/TCTA（10 nm）/mCP（10 nm）/mCP：

：FIrpic（20 nm，

，15%）/

（50 nm）/LiQ（2 nm）/Al（120 nm）的蓝光OLEDs。当

为PO-T2T，

=42.5%（质量分数）时，对应蓝光器件开启电压为2.83 V，功率效率和电流效率分别达到了35.5 lm/W和33.1 cd/A。在此基础上，将0.2%（质量分数）的黄光磷光材料PO-01掺入上述器件的发光层，得到了基于激基复合物主体的暖白光OLED，该器件获得了63.7 lm/W的功率效率、61.8 cd/A的电流效率以及19.9%的外量子效率，实现了具备低电压、高效率、色偏较小等优越性能的暖白光OLED。

Abstract

In order to obtain OLED with low driving voltage and high efficiency

a kind of exciplex mCP:PO-T2T is introduced in this paper. Firstly

by testing the photoluminescence spectra of mCP

TPBi

PO-T2T

mCP:TPBi and mCP:PO-T2T films

it is determined that mCP:TPBi and mCP:PO-T2T possess exciplex performance requirements. The blue OLEDs are fabricated by using the above two exciplexes as the host of the luminescent layer. The device structure is HATCN(10 nm)/TAPC(40 nm)/TCTA(10 nm)/mCP(10 nm)/mCP:

:FIrpic(20 nm

15%)/

(50 nm)/LiQ(2 nm)/Al(120 nm). When

is PO-T2T

and

=42.5%(mass fraction)

the open voltage of the corresponding device is 2.83 V

the power efficiency and current efficiency are 35.5 lm/W and 33.1 cd/A

respectively. On this basis

0.2%(mass fraction) yellow phosphorescent material PO-01 is incorporated into the light-emitting layer of the above device

warm white OLED based on the host of exciplex is obtained. The power efficiency

current efficiency and external quantum efficiency of the white OLED reaches 63.7 lm/W

61.8 cd/A and 19.9%

respectively. The warm white OLED with low voltage

high efficiency and low color bias is realized.

关键词

Keywords

references

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R&D Center of Shenzhen TCL New Technology Co. Ltd.

MIIT Key Laboratory for Low-Dimensional Quantum Structure and Devices， School of Materials Science & Engineering， Beijing Institute of Technology

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