中国物理B ›› 2020, Vol. 29 ›› Issue (1): 17302-017302.doi: 10.1088/1674-1056/ab5933

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Tetraalkyl-substituted zinc phthalocyanines used as anode buffer layers for organic light-emitting diodes

Qian Chen(陈潜), Songhe Yang(杨松鹤), Lei Dong(董磊), Siyuan Cai(蔡思源), Jiaju Xu(许家驹), Zongxiang Xu(许宗祥)   

  1. Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
  • 收稿日期:2019-07-15 修回日期:2019-11-15 出版日期:2020-01-05 发布日期:2020-01-05
  • 通讯作者: Jiaju Xu, Zongxiang Xu E-mail:xujj@sustech.edu.cn;xuzx@sustech.edu.cn
  • 基金资助:
    Project supported by the Shenzhen Personal Maker Project, China (Grant No. GRCK2017082316173208), the Shenzhen Overseas High-level Talents Innovation Plan of Technical Innovation, China (Grant No. KQJSCX20180323140712012), and the Special Funds for the Development of Strategic Emerging Industries in Shenzhen, China (Grant No. JCJY20170818154457845).

Tetraalkyl-substituted zinc phthalocyanines used as anode buffer layers for organic light-emitting diodes

Qian Chen(陈潜), Songhe Yang(杨松鹤), Lei Dong(董磊), Siyuan Cai(蔡思源), Jiaju Xu(许家驹), Zongxiang Xu(许宗祥)   

  1. Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
  • Received:2019-07-15 Revised:2019-11-15 Online:2020-01-05 Published:2020-01-05
  • Contact: Jiaju Xu, Zongxiang Xu E-mail:xujj@sustech.edu.cn;xuzx@sustech.edu.cn
  • Supported by:
    Project supported by the Shenzhen Personal Maker Project, China (Grant No. GRCK2017082316173208), the Shenzhen Overseas High-level Talents Innovation Plan of Technical Innovation, China (Grant No. KQJSCX20180323140712012), and the Special Funds for the Development of Strategic Emerging Industries in Shenzhen, China (Grant No. JCJY20170818154457845).

摘要: Two soluble tetraalkyl-substituted zinc phthalocyanines (ZnPcs) for use as anode buffer layer materials in tris(8-hydroxyquinoline)aluminum (Alq3)-based organic light-emitting diodes (OLEDs) are presented in this work. The hole-blocking properties of these ZnPc layers slowed the hole injection process into the Alq3 emissive layer greatly and thus reduced the production of unstable cationic Alq3 (Alq3+) species. This led to the enhanced brightness and efficiency when compared with the corresponding properties of OLEDs based on the popular poly-(3, 4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) buffer layer. Furthermore, because of the high thermal and chemical stabilities of these ZnPcs, a nonaqueous film fabrication process was realized together with improved charge balance in the OLEDs and enhanced OLED lifetimes.

关键词: organic light-emitting diode, anode buffer layer, metal phthalocyanine, solution process

Abstract: Two soluble tetraalkyl-substituted zinc phthalocyanines (ZnPcs) for use as anode buffer layer materials in tris(8-hydroxyquinoline)aluminum (Alq3)-based organic light-emitting diodes (OLEDs) are presented in this work. The hole-blocking properties of these ZnPc layers slowed the hole injection process into the Alq3 emissive layer greatly and thus reduced the production of unstable cationic Alq3 (Alq3+) species. This led to the enhanced brightness and efficiency when compared with the corresponding properties of OLEDs based on the popular poly-(3, 4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) buffer layer. Furthermore, because of the high thermal and chemical stabilities of these ZnPcs, a nonaqueous film fabrication process was realized together with improved charge balance in the OLEDs and enhanced OLED lifetimes.

Key words: organic light-emitting diode, anode buffer layer, metal phthalocyanine, solution process

中图分类号:  (Metal-insulator-semiconductor structures (including semiconductor-to-insulator))

  • 73.40.Qv
73.90.+f (Other topics in electronic structure and electrical properties of surfaces, interfaces, thin films, and low-dimensional structures)