Highly Efficient Near Ultraviolet Organic Light-emitting Device Based on WCl<sub>6</sub> Doped PEDOT∶PSS as Hole Injection Layer

Jia-xing WANG; Deng-li YAO; Ping CAI; Xiao-gang XUE; Li-ming LIU; Li-hui WANG; Zong-liu LU; Xiao-wen ZHANG

doi:10.37188/CJL.20210274

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Highly Efficient Near Ultraviolet Organic Light-emitting Device Based on WCl₆ Doped PEDOT∶PSS as Hole Injection Layer

Device Fabrication and Physics | 更新时间：2021-12-17

- Highly Efficient Near Ultraviolet Organic Light-emitting Device Based on WCl₆ Doped PEDOT∶PSS as Hole Injection Layer
  增强出版
- Chinese Journal of Luminescence Vol. 42, Issue 12, Pages: 1906-1913(2021)
- 作者机构：
  
  1.桂林电子科技大学　广西电子信息材料构效关系重点实验室，广西　桂林　541004
  2.电子科技大学中山学院　电子薄膜与集成器件国家重点实验室中山分室，广东　中山　528402
  3.中国有色桂林矿产地质研究院有限公司　广西超硬材料重点实验室，　桂林市微电子元件电极材料与生物纳米材料重点实验室，广西　桂林　541004
- 作者简介：
- 基金信息：
  
  Innovation Project of Guangxi Graduate Education(YCSW2020162)
- DOI：10.37188/CJL.20210274
  CLC： TN383⁺.1
- Published：2021-12，
  
  Received：30 August 2021，
  
  Revised：16 September 2021，
扫描看全文
Jia-xing WANG, Deng-li YAO, Ping CAI, et al. Highly Efficient Near Ultraviolet Organic Light-emitting Device Based on WCl₆ Doped PEDOT∶PSS as Hole Injection Layer. [J]. Chinese Journal of Luminescence 42(12):1906-1913(2021)
DOI：

Jia-xing WANG, Deng-li YAO, Ping CAI, et al. Highly Efficient Near Ultraviolet Organic Light-emitting Device Based on WCl₆ Doped PEDOT∶PSS as Hole Injection Layer. [J]. Chinese Journal of Luminescence 42(12):1906-1913(2021) DOI： 10.37188/CJL.20210274.

摘要

紫外有机发光器件(OLED)的宽带隙发光分子限制了空穴注入效率，从而导致载流子复合低效，器件发展受限。可溶液处理工艺兼顾了低成本、高可控性及规模生产的时代特色。本文报道了利用溶液法制备的WCl

及其与聚(3

4-乙烯二氧噻吩)-聚苯乙烯磺酸掺杂复合物(PEDOT∶PSS+WCl

)调控近紫外OLED的空穴注入特性，实现了高效率近紫外有机发光。X射线光电子能谱、紫外-可见光吸收光谱等分析表明，WCl

和PEDOT∶PSS+WCl

薄膜具有优异的电子特性和光透过性。伏安特性和阻抗谱分析表明，空穴注入能力按WCl

、PEDOT∶PSS和PEDOT∶PSS+WCl

的顺序依次增强。以PEDOT∶PSS+WCl

作空穴注入层、2-(4-联苯)-5-(4-叔丁基苯基)-1

4-恶二唑(PBD)作发光层，获得了最大外量子效率为2.6%、最大辐照度为8.05 mW/cm

、半峰宽为45 nm、电致发光峰为405 nm的高效率近紫外OLED。器件寿命测试对比结果表明，WCl

掺杂PEDOT∶PSS后器件的稳定性得到了增强。该研究结果拓展了WCl

的应用领域，对于推进高效稳定近紫外OLED的进一步发展具有一定的借鉴意义。

Abstract

Wide bandgap of emissive molecule in ultraviolet organic light-emitting device(UV-OLED) restricts hole injection

which results in inefficient carrier recombination and counteracts performance promotion. Solution-processed techniques with low cost

fine tunability and high throughout production meet the current requirement of manufacture. Herein

solution-processed WCl

and its doping composite of poly(3

4-ethylenedioxythiophene)-poly(styrenesulfonate)(PEDOT∶PSS)+WCl

are employed for tailoring hole injection of near UV-OLED

and thus achieving high efficiency. X-ray photoelectron spectroscopy and UV-visible absorption analysis show that WCl

and PEDOT∶PSS+WCl

films behave exceptional electronic properties and superior optical transmittance. Current-voltage characteristics and impedance spectroscopy analysis confirm that the hole injection ability is enhanced in the order of WCl

PEDOT∶PSS and PEDOT∶PSS+WCl

. Using PEDOT∶PSS+WCl

as hole injection tailoring and 2-(4-biphenyl)-5-(4-tert-butylphenyl)-1

4-oxadiazole(PBD) as emissive layer

the near UV-OLED reaches maximum external quantum efficiency of 2.6%

radiance of 8.05 mW/cm

full width at half maximum of 45 nm and electroluminescent peak of 405 nm. Device aging tests indicate that WCl

doped PEDOT∶PSS considerably enhances the stability of near UV-OLED. Our results expand the application of WCl

and efficient stable near UV-OLED.

关键词

紫外有机发光器件WCl6可溶液加工空穴注入阻抗谱

Keywords

ultraviolet organic light-emitting deviceWCl6solution processhole injectionimpedance spectroscopy

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Related Author

Dengli YAO

Ping CAI

Xiaogang XUE

Liming LIU

Lihui WANG

Zongliu LU

Xiaowen ZHANG

Jiaxing WANG

Related Institution

Guangxi Key Laboratory of Information Materials， Guilin University of Electronic Technology

Zhongshan Branch of State Key Laboratory of Electronic Thin Films and Integrated Devices， University of Electronic Science and Technology of China， Zhongshan Institute

Guilin Key Laboratory of Microelectronic Electrode Materials and Biological Nanomaterials， Guangxi Key Laboratory of Superhard Materials， China Monferrous Metal （Guilin） Geology and Mining Co.， Ltd

Key Laboratory for Special Functional Materials of Ministry of Education， School of Materials， Henan University

School of Electronic Science and Engineering， Department of Electronic Science， Xiamen University

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Highly Efficient Near Ultraviolet Organic Light-emitting Device Based on WCl6 Doped PEDOT∶PSS as Hole Injection Layer

DOI：10.37188/CJL.20210274

摘要

Abstract

关键词

Keywords

references

Highly Efficient Near Ultraviolet Organic Light-emitting Device Based on WCl₆ Doped PEDOT∶PSS as Hole Injection Layer