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WCl6掺杂PEDOT∶PSS作为空穴注入层的高效率近紫外有机发光器件
增强出版Highly Efficient Near Ultraviolet Organic Light-emitting Device Based on WCl6 Doped PEDOT∶PSS as Hole Injection Layer
- 发光学报 2021年42卷第12期 页码：1906-1913
- 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：
[ "王家兴(1997-)，男，安徽宿州人，硕士研究生，2019年于安徽理工大学获得学士学位，主要从事紫外有机发光器件的研究。E-mail: 2741882146@qq.com" ]
[ "张小文(1977-)，男，湖南邵阳人，博士，教授，2010年于上海大学获得博士学位，主要从事有机发光材料与器件、量子点器件的研究。E-mail: zhang-xiaowen@163.com" ]
- 基金信息：国家自然科学基金(62065004;52063010;51762011);广西自然科学基金(2018GXNSFDA294002);中山市科技项目(2019B2018);广西重点研发计划(桂科AB19110032);广西研究生教育创新计划(YCSW2020162)
DOI：10.37188/CJL.20210274
中图分类号： TN383+.1纸质出版日期：2021-12，
收稿日期：2021-08-30，
修回日期：2021-09-16，
扫 描 看 全 文
王家兴, 姚登莉, 蔡平, 等. WCl6掺杂PEDOT∶PSS作为空穴注入层的高效率近紫外有机发光器件[J]. 发光学报, 2021,42(12):1906-1913.
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, 2021,42(12):1906-1913.
王家兴, 姚登莉, 蔡平, 等. WCl6掺杂PEDOT∶PSS作为空穴注入层的高效率近紫外有机发光器件[J]. 发光学报, 2021,42(12):1906-1913. DOI： 10.37188/CJL.20210274.
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, 2021,42(12):1906-1913. 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
6
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
6
)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
6
和PEDOT∶PSS+WCl
6
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
6
、PEDOT∶PSS和PEDOT∶PSS+WCl
6
的顺序依次增强。以PEDOT∶PSS+WCl
6
作空穴注入层、2-(4-联苯)-5-(4-叔丁基苯基)-1
3
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
2
、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
6
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
6
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
6
and its doping composite of poly(3
4-ethylenedioxythiophene)-poly(styrenesulfonate)(PEDOT∶PSS)+WCl
6
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
6
and PEDOT∶PSS+WCl
6
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
6
PEDOT∶PSS and PEDOT∶PSS+WCl
6
. Using PEDOT∶PSS+WCl
6
as hole injection tailoring and 2-(4-biphenyl)-5-(4-tert-butylphenyl)-1
3
4-oxadiazole(PBD) as emissive layer
the near UV-OLED reaches maximum external quantum efficiency of 2.6%
radiance of 8.05 mW/cm
2
full width at half maximum of 45 nm and electroluminescent peak of 405 nm. Device aging tests indicate that WCl
6
doped PEDOT∶PSS considerably enhances the stability of near UV-OLED. Our results expand the application of WCl
6
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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