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Mapping hole mobility in PTB7 films at nanoscale

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Alekseev_2019_IOP_Conf._Ser._Mater._Sci._Eng._699_012001.pdf (1.048Mb)
Date
16/12/2019
Author
Alekseev, A M
Yedrissov, A T
Ilyassov, B R
Hedley, G J
Samuel, I D W
Kharintsev, S S
Keywords
QC Physics
TK Electrical engineering. Electronics Nuclear engineering
NDAS
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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.
Citation
Alekseev , A M , Yedrissov , A T , Ilyassov , B R , Hedley , G J , Samuel , I D W & Kharintsev , S S 2019 , Mapping hole mobility in PTB7 films at nanoscale . in SPM–2019–RCWDFM Joint International Conference 25–28 August 2019, Ekaterinburg, Russian Federation, Proceedings . vol. 699 , 012001 , IOP Conference Series: Materials Science and Engineering , vol. 699 , Institute of Physics Publishing , SPM-2019-RCWDFM Joint International Conference , Ekaterinburg , Russian Federation , 25/08/19 . https://doi.org/10.1088/1757-899X/699/1/012001
 
conference
 
Publication
SPM–2019–RCWDFM Joint International Conference 25–28 August 2019, Ekaterinburg, Russian Federation, Proceedings
DOI
https://doi.org/10.1088/1757-899X/699/1/012001
ISSN
1757-8981
Type
Conference item
Rights
Copyright 2019 the Author(s). Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published under licence by IOP Publishing Ltd.
Description
Funding: Federal Target Program of MES of Russian Federation, contract 14.575.21.0149 (RFMEFI57517X0149).
Collections
  • University of St Andrews Research
URI
http://hdl.handle.net/10023/19203

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