Novel yellow phosphorescent iridium(Ⅲ) complex with broad emission: Synthesis, photophysical properties and efficient electroluminescence

Peng TAO; Xiao-kang ZHENG; Meng-na YIN; Fang-qing ZHAO; Yan-qin MIAO; Shu-juan LIU; Qiang ZHAO

doi:10.37188/CJLCD.2020-0266

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Novel yellow phosphorescent iridium(Ⅲ) complex with broad emission: Synthesis, photophysical properties and efficient electroluminescence

Organic Light-Emitting Materials and Devices | 更新时间：2021-02-01

- Novel yellow phosphorescent iridium(Ⅲ) complex with broad emission: Synthesis, photophysical properties and efficient electroluminescence
- Chinese Journal of Liquid Crystals and Displays Vol. 36, Issue 1, Pages: 1-7(2021)
- 作者机构：
  
  1.南京邮电大学有机电子与信息显示国家重点实验室培育基地, 信息材料与纳米技术研究院, 柔性电子(未来技术)研究院, 江苏南京 210023
  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：
  
  Supported by National Funds for Distinguished Young Scientists;National Natural Science Foundation of China;National Natural Science Foundation of China;Natural Science Foundation of Jiangsu Province;Key R&D Program of Shanxi Province
- DOI：10.37188/CJLCD.2020-0266
  CLC： TP394.1;TN383.1
- Received：09 October 2020，
  
  Accepted：06 November 2020，
  
  Published：2021-01
- 稿件说明：
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Peng TAO, Xiao-kang ZHENG, Meng-na YIN, et al. Novel yellow phosphorescent iridium(Ⅲ) complex with broad emission: Synthesis, photophysical properties and efficient electroluminescence[J]. Chinese journal of liquid crystals and displays, 2021, 36(1): 1-7.
DOI：

Peng TAO, Xiao-kang ZHENG, Meng-na YIN, et al. Novel yellow phosphorescent iridium(Ⅲ) complex with broad emission: Synthesis, photophysical properties and efficient electroluminescence[J]. Chinese journal of liquid crystals and displays, 2021, 36(1): 1-7. DOI： 10.37188/CJLCD.2020-0266.

摘要

发展新型高性能黄色磷光材料是实现高品质互补色白光有机发光器件(OLEDs)的关键。本工作中，使用氯原子功能化的2-苯基喹啉衍生物作为环金属配体，乙酰丙酮作为辅助配体，通过温和的合成方法制备了一种新型氯功能化的黄色磷光铱(Ⅲ)配合物(Ir1)。通过核磁共振谱和单晶X-射线衍射确认了配合物的结构。该配合物在二氯甲烷中具有强的宽谱带黄色磷光发射，最大发射峰位于574 nm，发射寿命为1.29

s，量子效率达到51%。与同类发射波段的铱(Ⅲ)配合物相比，该黄光配合物具有非常宽的单分子发射半峰宽(101 nm)。进一步制备了基于该磷光配合物的高性能黄光OLEDs，器件最大发射峰位于568 nm，发射半峰宽达到88 nm，器件最大亮度、外量子效率、电流效率和功率效率分别达到18 310 cd/m

、20.8%、58.16 cd/A和48.3 lm/W。结果表明该黄色磷光配合物在高性能互补色白光有机发光器件方面具有重要前景。

Abstract

High-performance yellow emitter is the key to achieve high-quality complementary white organic electroluminescence. Herein

a novel yellow iridium(Ⅲ) complex (Ir1) is synthesized by using chlorine-bearing cyclometalated ligand under the mild condition. The complex is confirmed by nuclear magnetic resonance and X-ray diffraction analysis. In degassed CH

the complex shows bright yellow phosphorescent emission with high luminescent quantum yield of 51% and lifetime of 1.29

s at room temperature. Notably

the full width at half maximum (FWHM) of emission spectrum is up to 101 nm. Moreover

complex Ir1 is served as triplet emitter in organic light-emitting device. The device exhibits broad yellow emission at 568 nm with FWHM of 88 nm

maximum brightness of 18 310 cd/m

external quantum efficiency of 20.8%

current efficiency of 58.2 cd/A and power efficiency of 48.3 lm/W.

关键词

Keywords

references

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