Andrey Kadashchuk (Author), Fei Tong (Author), Egon Pavlica (Author), Gvido Bratina (Author)

Abstract

We demonstrate that the degree of charge delocalization has a strong impact on polarization energy and thereby on the position of the transport band edge in organic semiconductors. This gives rise to long-range potential fluctuations, which govern the electronic transport through delocalized states in organic crystalline layers. This concept is employed to formulate an analytic model that explains a negative field dependence coupled with a positive temperature dependence of the charge mobility observed by a lateral time-of-flight technique in a high-mobility crystalline organic layer. This has important implications for the further understanding of the charge transport via delocalized states in organic semiconductors.

Keywords

organic semiconducotrs;time of flight;transport;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UNG - University of Nova Gorica
UDC: 538.9
COBISS: 4915195 Link will open in a new window
ISSN: 2469-9950
Views: 3635
Downloads: 0
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Other data

URN: URN:SI:UNG
Type (COBISS): Not categorized
Pages: str. 125202-1-125202-6
Volume: ǂVol. ǂ96
Issue: ǂiss. ǂ12
Chronology: 2017
DOI: 10.1103/PhysRevB.96.125202
ID: 10864249