Interface Fermi Level Pinning at Contacts Between PEDOT: PSS and Molecular Organic Semiconductors | Zendy

Peisert Heiko | Zendy; Petr Andreas | Zendy; Dunsch Lothar | Zendy; Chassé Thomas | Zendy; Knupfer Martin | Zendy

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Interface Fermi Level Pinning at Contacts Between PEDOT: PSS and Molecular Organic Semiconductors

Author(s) -

Peisert Heiko,

Petr Andreas,

Dunsch Lothar,

Chassé Thomas,

Knupfer Martin

Publication year - 2007

Publication title -

chemphyschem

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.016

H-Index - 140

eISSN - 1439-7641

pISSN - 1439-4235

DOI - 10.1002/cphc.200600542

Subject(s) - organic semiconductor , interface (matter) , pedot:pss , condensed matter physics , materials science , fermi level , semiconductor , chemical physics , nanotechnology , optoelectronics , chemistry , physics , composite material , electron , layer (electronics) , quantum mechanics , capillary number , capillary action

Photoemission studies of interfaces between molecular organic semiconductors and the conducting polymer PEDOT: PSS [mixture of PEDOT (poly‐3,4‐ethylenedioxy‐thiophene) and PSS (polystyrenesulfonate)] demonstrate that it is impossible to control the charge injection barriers at such contacts by either a systematic change of the work function of the conducting polymer or that of the organic semiconductor. Instead, these interfaces are, in all cases, characterized by a charge transfer across the interface and a resulting Fermi level pinning. Thus interfacial charge barriers do not explain observed changes in device parameters as a function of the work function of the polymer electrode.

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