Imperial College London
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ProfessorMartinHeeney

Faculty of Natural Sciences, Department of Chemistry

Professor of Organic Materials
 
 
 
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Contact

 

+44 (0)20 7594 1248m.heeney Website

 
 
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Location

 

401GMolecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Han:2016:10.1021/acs.chemmater.6b03761,
author = {Han, Y and Barnes, G and Lin, Y-H and Martin, J and Al-Hashimi, M and AlQaradawi, SY and Anthopoulos, TD and Heeney, M},
doi = {10.1021/acs.chemmater.6b03761},
journal = {Chemistry of Materials},
pages = {8016--8024},
title = {Doping of large ionization potential indenopyrazine polymers via Lewis acid complexation with tris(pentafluorophenyl)borane: a simple method for improving the performance of organic thin-film transistors},
url = {http://dx.doi.org/10.1021/acs.chemmater.6b03761},
volume = {28},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Molecular doping, under certain circumstances, can be used to improve the charge transport in organic semiconductors through the introduction of excess charge carriers which can in turn negate unwanted trap states often present in organic semiconductors. Here, two Lewis basic indenopyrazine copolymers with large ionization potential (5.78 and 5.82 eV) are prepared to investigate the p-doping efficiency with the Lewis acid dopant, tris(pentafluorophenyl)borane, using organic thin-film transistors (OTFTs). The formation of Lewis acid–base complex between the polymer and dopant molecules is confirmed via optical spectroscopy and electrical field-effect measurements, with the latter revealing a dopant-concentration-dependent device performance. By adjusting the amount of p-dopant, the hole mobility can be increased up to 11-fold while the OTFTs’ threshold voltages are reduced. The work demonstrates an alternative doping mechanism other than the traditional charge transfer model, where the energy level matching principle can limit the option of dopants.
AU  - Han,Y
AU  - Barnes,G
AU  - Lin,Y-H
AU  - Martin,J
AU  - Al-Hashimi,M
AU  - AlQaradawi,SY
AU  - Anthopoulos,TD
AU  - Heeney,M
DO  - 10.1021/acs.chemmater.6b03761
EP  - 8024
PY  - 2016///
SN  - 1520-5002
SP  - 8016
TI  - Doping of large ionization potential indenopyrazine polymers via Lewis acid complexation with tris(pentafluorophenyl)borane: a simple method for improving the performance of organic thin-film transistors
T2  - Chemistry of Materials
UR  - http://dx.doi.org/10.1021/acs.chemmater.6b03761
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000387518500053&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/43303
VL  - 28
ER  -
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