Enhanced hole injection in a polymer light emitting diode using a small molecule monolayer bound to the anode

被引:26
作者
Guo, Jing
Koch, Norbert
Bernasek, Steven L.
Schwartz, Jeffrey
机构
[1] Princeton Univ, Dept Chem, Princeton, NJ 08544 USA
[2] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany
基金
美国国家科学基金会;
关键词
D O I
10.1016/j.cplett.2006.05.129
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A monolayer of quarterthiophene-2-phosphonate (4TP) was chemically bound to the surface of indium tin oxide (ITO) and was then p-doped with the strong acceptor, tetrafluorotetracyanoquinodimethane (F-4-TCNQ). This interface modification strongly reduced the barrier for hole injection compared to unmodified ITO. This doped monolayer surface treatment was also superior to the commonly used anode coating poly(3,4-ethylenedioxythiophene):poly(styrenesulfonic acid) (PEDOT:PPS) at driving voltages above 5.2 V. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:370 / 373
页数:4
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