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Interfaces of (Ultra)thin Polymer Films in Organic Electronics
Author(s) -
Bao Qinye,
Braun Slawomir,
Wang Chuanfei,
Liu Xianjie,
Fahlman Mats
Publication year - 2019
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201800897
Subject(s) - materials science , polymer , conjugated system , organic electronics , thin film , electronics , nanotechnology , organic solar cell , heterojunction , polymer solar cell , bending , organic semiconductor , optoelectronics , composite material , transistor , chemistry , physics , quantum mechanics , voltage
In this short review the energy level alignment of interfaces involving solution‐processed conjugated polymer (and soluble small molecules) films is described. Some general material properties of conjugated polymers and their solution‐processed films are introduced, and the basic physics involved in energy level alignment at their interfaces is then discussed. An overview of energy level bending in (ultra)thin conjugated polymer films (often referred to as “band bending”) is given and the effects of ion‐containing interlayers typically used in organic electronic devices such as polymer light emitting diodes and organic bulk heterojunction solar cells are explored. The review finishes by describing a few of the available computational models useful for predicting and/or modeling energy level alignment at interfaces of solution‐processed polymer films and discusses their respective strengths and weaknesses.