Weak charge transfer between an acceptor molecule and metal surfaces enabling organic/metal energy level tuning

被引:33
作者
Duhm, Steffen
Glowatzki, Hendrik
Cimpeanu, Valentin
Klankermayer, Jurgen
Rabe, Jurgen P.
Johnson, Robert L.
Koch, Norbert
机构
[1] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany
[2] Rhein Westfal TH Aachen, Inst Tech & Makromol Chem, D-52074 Aachen, Germany
[3] Univ Hamburg, Inst Expt Phys, D-22761 Hamburg, Germany
关键词
D O I
10.1021/jp0644715
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
Evidence for charge transfer (CT) between the electron acceptor molecule octafluoroanthraquinone (FAQ) and the metal surfaces Ag(111) and polycrystalline Au is provided by ultraviolet photoelectron spectroscopy. The energy level alignment of subsequently deposited sexithienyl (6T) on FAQ-precovered metal substrates was investigated. Due to the metal work function change induced by the FAQ-metal CT, the hole injection barrier of 6T on FAQ-precovered metals could be reduced by up to 0.60 eV compared to that of 6T on pristine metal surfaces.
引用
收藏
页码:21069 / 21072
页数:4
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