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

Jing Guo, Norbert Koch, Steven L. Bernasek, Jeffrey Schwartz

Research output: Contribution to journalArticle

28 Scopus citations

Abstract

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 (F4-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.

Original languageEnglish (US)
Pages (from-to)370-373
Number of pages4
JournalChemical Physics Letters
Volume426
Issue number4-6
DOIs
StatePublished - Aug 4 2006

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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