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{Kafourou:2021:10.1021/acsmaterialslett.1c00635,
author = {Kafourou, P and Nugraha, MI and Nikitaras, A and Tan, L and Firdaus, Y and Aniés, F and Eisner, F and Ding, B and Wenzel, J and Holicky, M and Tsetseris, L and Anthopoulos, TD and Heeney, M},
doi = {10.1021/acsmaterialslett.1c00635},
journal = {ACS Materials Letters},
pages = {165--174},
title = {Near-IR absorbing molecular semiconductors incorporating cyanated benzothiadiazole acceptors for high performance semi-transparent n-type organic field-effect transistors},
url = {http://dx.doi.org/10.1021/acsmaterialslett.1c00635},
volume = {4},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Small band gap molecular semiconductors are of interest for the development of transparent electronics. Here we report two near-infrared (NIR), n-type small molecule semiconductors, based upon an acceptor-donor-acceptor (A-D-A) approach. We show that the inclusion of molecular spacers between the strong electron accepting end group, 2,1,3-benzothiadiazole-4,5,6-tricarbonitrile, and the donor core affords semiconductors with very low band gaps down to 1 eV. Both materials were synthesised by a one-pot, sixfold nucleophilic displacement of a fluorinated precursor by cyanide. Significant differences in solid-state ordering and charge carrier mobility are observed depending on the nature of the spacer, with a thiophene spacer resulting in solution processed organic field-effect transistors (OFETs) exhibiting excellent electron mobility up to 1.1 cm2 V-1s-1. The use of silver nanowires as the gate electrodes enables the fabrication of semi-transparent OFET device with average visible transmission of 71% in the optical spectrum.
AU  - Kafourou,P
AU  - Nugraha,MI
AU  - Nikitaras,A
AU  - Tan,L
AU  - Firdaus,Y
AU  - Aniés,F
AU  - Eisner,F
AU  - Ding,B
AU  - Wenzel,J
AU  - Holicky,M
AU  - Tsetseris,L
AU  - Anthopoulos,TD
AU  - Heeney,M
DO  - 10.1021/acsmaterialslett.1c00635
EP  - 174
PY  - 2021///
SN  - 2639-4979
SP  - 165
TI  - Near-IR absorbing molecular semiconductors incorporating cyanated benzothiadiazole acceptors for high performance semi-transparent n-type organic field-effect transistors
T2  - ACS Materials Letters
UR  - http://dx.doi.org/10.1021/acsmaterialslett.1c00635
UR  - https://pubs.acs.org/doi/10.1021/acsmaterialslett.1c00635
UR  - http://hdl.handle.net/10044/1/93094
VL  - 4
ER  -
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