物理化学学报 >> 2015, Vol. 31 >> Issue (2): 377-383.doi: 10.3866/PKU.WHXB201412171

光化学和辐射化学 上一篇    下一篇

氧化石墨烯掺杂PEDOT:PSS作为空穴注入层对有机发光二极管发光性能的影响

杨君礼1,2, 武聪伶1,2, 李源浩1,2, 李菀丽1,2, 苗艳勤1,2, 郭鹍鹏1,2, 刘慧慧1,2, 王华1,2, 吴永安3   

  1. 1. 太原理工大学新材料界面科学与工程教育部重点实验室, 太原 030024;
    2. 太原理工大学新材料工程技术研究中心, 太原 030024;
    3. 山西国光半导体照明工程研究有限公司, 太原 030012
  • 收稿日期:2014-09-29 修回日期:2014-12-15 发布日期:2015-01-26
  • 通讯作者: 郭鹍鹏, 王华 E-mail:guokunpeng@tyut.edu.cn;wanghua001@tyut.edu.cn
  • 基金资助:

    国家自然科学基金(61307029, 21101111), 山西省科技创新重点团队(2012041011), 科技部国际科技合作专项项目(2012DFR50460)和教育部新世纪人才计划(NCET-13-0927)资助项目

Effect of Graphene Oxide Doped PEDOT:PSS as a Hole Injection Layer on the Luminescence Performance of Organic Light-Emitting Diodes

YANG Jun-Li1,2, WU Cong-Ling1,2, LI Yuan-Hao1,2, LI Wan-Li1,2, MIAO Yan-Qin1,2, GUO Kun-Peng1,2, LIU Hui-Hui1,2, WANG Hua1,2, WU Yong-An3   

  1. 1. Key Laboratory of Interface Science and Engineering in Advanced Materials of Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, P. R. China;
    2. Research Center of Advanced Materials Science and Technology, Taiyuan University of Technology, Taiyuan 030024, P. R. China;
    3. Shanxi Guoguang Semiconductor Lighting Engineering Co. Ltd., Taiyuan 030012, P. R. China
  • Received:2014-09-29 Revised:2014-12-15 Published:2015-01-26
  • Contact: GUO Kun-Peng, WANG Hua E-mail:guokunpeng@tyut.edu.cn;wanghua001@tyut.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (61307029, 21101111), Shanxi Provincial Key Innovative Research Team in Science and Technology, China (2012041011), International Science & Technology Cooperation Program of China (2012DFR50460), and New Century Excellent Talents in University of Ministry of Education of China (NCET-13-0927).

摘要:

研究了氧化石墨烯(GO)掺杂聚(3,4-亚乙二氧基噻吩):聚(苯乙烯磺酸) (PEDOT:PSS)作为空穴注入层对有机发光二极管发光性能的影响. 在PEDOT:PSS水溶液中掺入GO, 经过湿法旋涂和退火成膜后, 不仅提高了空穴注入层的空穴注入能力和导电率, 透光率也得到了相应的提高, 从而使得有机发光二极管(OLED)器件的发光性能得到了提升. 通过优化GO掺杂量发现, 当GO掺杂量为0.8%(质量分数)时, 空穴注入层的透光率达到最大值(96.8%), 此时获得的OLED器件性能最佳, 其最大发光亮度和最大发光效率分别达到17939 cd·m-2和3.74 cd·A-1. 与PEDOT:PSS 作为空穴注入层的器件相比, 掺杂GO后器件的最大发光亮度和最大发光效率分别提高了46.6%和67.6%.

关键词: 氧化石墨烯, PEDOT:PSS, 空穴注入, 透光率, 导电率, 有机发光二极管

Abstract:

We prepared organic light-emitting diodes (OLED) using graphene oxide (GO) doped poly(3,4- ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) as a hole injection layer (HIL). The PEDOT:PSS: GO HIL layer was prepared by mixing GO into a PEDOT:PSS aqueous solution and spin-coating onto indiumtin oxide (ITO). The luminance of the ITO/PEDOT:PSS:GO (w)/NPB/Alq3/LiF/Al devices were investigated. High luminance and luminous efficiency at a low turn-on voltage were observed when using PEDOT:PSS:GO as the HIL layer in OLEDs. This can be attributed to its enhanced hole injection ability, conductivity and transparency compared to a PEDOT:PSS HIL layer based OLED. The optimized OLED containing PEDOT:PSS:GO (0.8%, mass fraction) composite HIL layer shows a transmission value of 96.8%, maximum luminance and luminous efficiency of 17939 cd·m-2 (at 7.5 V) and 3.74 cd·A-1 (at 5.5 V), respectively. These were 46.6% and 67.6% higher, respectively, compared to the reference OLED containing a PEDOT:PSS HIL layer.

Key words: Graphene oxide, PEDOT:PSS, Hole injection, Transparency, Conductivity, Organic light-emitting diode

MSC2000: 

  • O649