Imperial College London

ProfessorMartinHeeney

Faculty of Natural SciencesDepartment 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{Panidi:2017:10.1002/advs.201700290,
author = {Panidi, J and Paterson, AF and Khim, D and Fei, Z and Han, Y and Tsetseris, L and Vourlias, G and Patsalas, PA and Heeney, M and Anthopoulos, TD},
doi = {10.1002/advs.201700290},
journal = {Advanced Science},
title = {Remarkable Enhancement of the Hole Mobility in Several Organic Small-Molecules, Polymers, and Small-Molecule:Polymer Blend Transistors by Simple Admixing of the Lewis Acid p-Dopant B(C6F5)(3)},
url = {http://dx.doi.org/10.1002/advs.201700290},
volume = {5},
year = {2017}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Improving the charge carrier mobility of solution-processable organic semiconductors is critical for the development of advanced organic thin-film transistors and their application in the emerging sector of printed electronics. Here, a simple method is reported for enhancing the hole mobility in a wide range of organic semiconductors, including small-molecules, polymers, and small-molecule:polymer blends, with the latter systems exhibiting the highest mobility. The method is simple and relies on admixing of the molecular Lewis acid B(C6F5)3 in the semiconductor formulation prior to solution deposition. Two prototypical semiconductors where B(C6F5)3 is shown to have a remarkable impact are the blends of 2,8-difluoro-5,11-bis(triethylsilylethynyl)anthradithiophene:poly(triarylamine) (diF-TESADT:PTAA) and 2,7-dioctyl[1]-benzothieno[3,2-b][1]benzothiophene:poly(indacenodithiophene-co-benzothiadiazole) (C8-BTBT:C16-IDTBT), for which hole mobilities of 8 and 11 cm2 V−1 s−1, respectively, are obtained. Doping of the 6,13-bis(triisopropylsilylethynyl)pentacene:PTAA blend with B(C6F5)3 is also shown to increase the maximum hole mobility to 3.7 cm2 V−1 s−1. Analysis of the single and multicomponent materials reveals that B(C6F5)3 plays a dual role, first acting as an efficient p-dopant, and secondly as a microstructure modifier. Semiconductors that undergo simultaneous p-doping and dopant-induced long-range crystallization are found to consistently outperform transistors based on the pristine materials. Our work underscores Lewis acid doping as a generic strategy towards high performance printed organic microelectronics.
AU - Panidi,J
AU - Paterson,AF
AU - Khim,D
AU - Fei,Z
AU - Han,Y
AU - Tsetseris,L
AU - Vourlias,G
AU - Patsalas,PA
AU - Heeney,M
AU - Anthopoulos,TD
DO - 10.1002/advs.201700290
PY - 2017///
SN - 2198-3844
TI - Remarkable Enhancement of the Hole Mobility in Several Organic Small-Molecules, Polymers, and Small-Molecule:Polymer Blend Transistors by Simple Admixing of the Lewis Acid p-Dopant B(C6F5)(3)
T2 - Advanced Science
UR - http://dx.doi.org/10.1002/advs.201700290
UR - http://hdl.handle.net/10044/1/56569
VL - 5
ER -