Near-IR Absorbing Molecular Semiconductors Incorporating Cyanated Benzothiadiazole Acceptors for High-Performance Semitransparent n-Type Organic Field-Effect Transistors
Name:
Main Text_NIR_SC_for_Transparent_TFT_final .pdf
Size:
2.739Mb
Format:
PDF
Description:
Accepted Manuscript
Embargo End Date:
2022-12-17
Type
ArticleAuthors
Kafourou, PanagiotaNugraha, Mohamad Insan

Nikitaras, Aggelos
Tan, Luxi

Firdaus, Yuliar

Aniés, Filip

Eisner, Flurin D.

Ding, Bowen
Wenzel, Jonas
Holicky, Martin
Tsetseris, Leonidas
Anthopoulos, Thomas D.

Heeney, Martin

KAUST Department
Physical Science and Engineering (PSE) DivisionKAUST Solar Center (KSC)
Material Science and Engineering Program
KAUST Grant Number
OSR-2020-CRG8-4095OSR-2018-CARF/CCF-3079
Date
2021-12-17Embargo End Date
2022-12-17Permanent link to this record
http://hdl.handle.net/10754/675005
Metadata
Show full item recordAbstract
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 synthesized by a one-pot, 6-fold 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-1 s-1. The use of silver nanowires as the gate electrode enables the fabrication of a semitransparent OFET device with an average visible transmission of 71% in the optical spectrum.Citation
Kafourou, P., Nugraha, M. I., Nikitaras, A., Tan, L., Firdaus, Y., Aniés, F., … Heeney, M. (2021). Near-IR Absorbing Molecular Semiconductors Incorporating Cyanated Benzothiadiazole Acceptors for High-Performance Semitransparent n-Type Organic Field-Effect Transistors. ACS Materials Letters, 165–174. doi:10.1021/acsmaterialslett.1c00635Sponsors
The authors thank the Engineering and Physical Sciences Research Council (EPSRC) (EP/L016702/1 and EP/T028513/1), Global Research Laboratory Program of the National Research Foundation (NRF-2017K1A1A2013153), the Royal Society, and the Wolfson Foundation (Royal Society Wolfson Fellowship) for funding. M.I.N., M.H., and T.D.A. acknowledge funding from the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award Nos. OSR-2018-CARF/CCF-3079 and OSR-2020-CRG8-4095. F.E. thanks EPSRC for support via a Doctoral Prize Fellowship.Publisher
American Chemical Society (ACS)Journal
ACS Materials LettersAdditional Links
https://pubs.acs.org/doi/10.1021/acsmaterialslett.1c00635ae974a485f413a2113503eed53cd6c53
10.1021/acsmaterialslett.1c00635