Optimized Hole Injection with Strong Electron Acceptors at Organic-Metal Interfaces
- 30 November 2005
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 95 (23), 237601
- https://doi.org/10.1103/physrevlett.95.237601
Abstract
The energy-level alignment at interfaces between three electroactive conjugated organic materials and Au was systematically varied by adjusting the precoverage of the metal substrate with the electron acceptor tetrafluoro-tetracyanoquinodimethane (F4-TCNQ). Photoelectron spectroscopy revealed that electron transfer from Au to adsorbed F4-TCNQ was responsible for lowering the hole-injection barrier by as much as 1.2 eV. This novel interface modification scheme is independent of the charge transfer complex formation ability of the organic materials with the electron acceptor.Keywords
This publication has 30 references indexed in Scilit:
- Electronic structure and electrical properties of interfaces between metals and π‐conjugated molecular filmsJournal of Polymer Science Part B: Polymer Physics, 2003
- Band alignment on a nanoscopically patterned inorganic–organic interfaceApplied Physics Letters, 2003
- Controlled p-doping of zinc phthalocyanine by coevaporation with tetrafluorotetracyanoquinodimethane: A direct and inverse photoemission studyApplied Physics Letters, 2001
- Bipolaron: The Stable Charged Species in n-Doped p-SexiphenylThe Journal of Physical Chemistry B, 2000
- Current-Induced Insulator-Metal Transition and Pattern Formation in an Organic Charge-Transfer ComplexScience, 1999
- Controlled doping of phthalocyanine layers by cosublimation with acceptor molecules: A systematic Seebeck and conductivity studyApplied Physics Letters, 1998
- Theoretical study of the charge transfer in the organic crystal of dimethylquaterthiophene and tetrafluoro-tetracyanoquinodimethanePhysical Review B, 1997
- Image states and local work function for Ag/Pd(111)Physical Review Letters, 1993
- Alkyl-substituted oligothiophenes: crystallographic and spectroscopic studies of neutral and doped formsJournal of Materials Chemistry, 1991
- Electron transfer in a new highly conducting donor-acceptor complexJournal of the American Chemical Society, 1973