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

作　　者：Qian Chen Songhe Yang Lei Dong Siyuan Cai Jiaju Xu Zongxiang Xu 陈潜;杨松鹤;董磊;蔡思源;许家驹;许宗祥(Department of Chemistry,Southern University of Science and Technology)

机构地区：[1]Department of Chemistry,Southern University of Science and Technology,Shenzhen 518055,China

出　　处：《Chinese Physics B》2020年第1期417-423,共7页中国物理B（英文版）

基　　金：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);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 holeblocking properties of these Zn Pc 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 Zn Pcs,a nonaqueous film fabrication process was realized together with improved charge balance in the OLEDs and enhanced OLED lifetimes.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 holeblocking properties of these Zn Pc 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 Zn Pcs, 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 

分 类 号：O627.23[理学—有机化学] TN383.1[理学—化学]