Work

Mapping hole mobility in PTB7 films at nanoscale

Year: 2019

Type: conference-paper

Abstract: The nanoscale hole mobility in organic semiconducting polymer PTB7 is quantified by using conductive-AFM (C-AFM) measurements in space charge limited (SCLC) regime. The obtained current map of the neat PTB7 film is explained in terms of non-uniform built-in voltage and variations of hole mobility. For mobility estimation, the semi-empirical model of SCLC, known from previous works, was modified and applied. It is found that the values of built-in voltage in C-AFM measurements are usually several times larger than ones derived from macroscopic measurements. It is also shown that value of hole mobility in PTB7 film depends on location and varies in more than two times. These mobility variations are connected with nanoscale film structure revealed by other methods.

Source: IOP Conference Series Materials Science and Engineering

DOI: 10.1088/1757-899x/699/1/012001

Authors: A M Alekseev, A T Yedrissov, B R Ilyassov, G J Hedley, I D W Samuel, S S Kharintsev

Institutions: National Research University of Electronic Technology, Nazarbayev University, Karaganda Buketov University, University of Glasgow, University of St Andrews, Kazan Federal University

Language: English

Topic: Organic Electronics and Photovoltaics

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

OpenAlex ID: W3013334629

FWCI:

Cites: 16

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Related to: 10