Publication
Title
Charge equilibration and potential steps in organic semiconductor multilayers
Author
Abstract
Substantial potential steps similar to 0.5 eV are frequently observed in organic multilayers of donor and acceptor molecules. Often such potential steps depend on the order in which the individual layers are deposited, or on which substrate they are deposited. In this paper we outline a model for these potential steps, based upon integer charge transfer between donors and acceptors, charge equilibration across the multilayer, and simple electrostatics. Each donor, acceptor, or substrate material is characterized by a pinning level, and the potential profile can be deduced from the sequential order of the layers, and the differences between their pinning levels. For particular orderings we predict that intrinsic potential differences lead to electric fields across individual layers, which may falsely be interpreted as band bending. (c) 2012 Elsevier B.V. All rights reserved.
Language
English
Source (journal)
Organic electronics: physics, materials, applications. - London
Publication
London : 2012
ISSN
1566-1199
Volume/pages
13:10(2012), p. 1793-1801
ISI
000309591200005
Full text (Publisher's DOI)
Full text (publisher's version - intranet only)
UAntwerpen
Faculty/Department
Publication type
Subject
External links
Web of Science
Record
Identification
Creation 26.10.2015
Last edited 20.10.2017