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@article{Nugraha:2022:10.1002/adfm.202202954,
author = {Nugraha, MI and Gedda, M and Firdaus, Y and Scaccabarozzi, AD and Zhang, W and Alshammari, S and Anies, F and Adilbekova, B and Emwas, A-H and McCulloch, I and Heeney, M and Tsetseris, L and Anthopoulos, TD},
doi = {10.1002/adfm.202202954},
journal = {Advanced Functional Materials},
title = {Addition of diquat enhances the electron mobility in various non-fullerene acceptor molecules},
url = {http://dx.doi.org/10.1002/adfm.202202954},
year = {2022}
}

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TY  - JOUR
AB  - Molecular doping of organic semiconductors is often used to enhance their charge transport characteristics. Despite its success, however, most studies to date concern p-doping with considerably fewer reports involving n-dopants. Here, n-doping of organic thin-film transistors (OTFTs) based on several non-fullerene acceptor (NFA) molecules using the recently developed diquat (DQ) as a soluble molecular dopant is reported. The low ionization potential of DQ facilitates efficient electron transfer and subsequent n-doping of the NFAs, resulting in a consistent increase in the electron field-effect mobility. Solution-processed BTP-eC9 and N3-based OTFTs exhibit significant increase in the electron mobility upon DQ doping, with values increasing from 0.02 to 0.17 cm2 V–1 s–1 and from 0.2 to 0.57 cm2 V–1 s–1, respectively. A remarkable electron mobility of >1 cm2 V–1 s–1 is achieved for O-IDTBR transistors upon optimal doping with DQ. The enhanced performance originates primarily from synergistic effects on electronic transport and changes in morphology, including: i) significant reduction of contact resistances, ii) formation of larger crystalline domains, iii) change of preferred crystal orientation, and iv) alteration in molecular packing motif. This work demonstrates the universality of DQ as an electronic additive for improving electron transport in OTFTs.
AU  - Nugraha,MI
AU  - Gedda,M
AU  - Firdaus,Y
AU  - Scaccabarozzi,AD
AU  - Zhang,W
AU  - Alshammari,S
AU  - Anies,F
AU  - Adilbekova,B
AU  - Emwas,A-H
AU  - McCulloch,I
AU  - Heeney,M
AU  - Tsetseris,L
AU  - Anthopoulos,TD
DO  - 10.1002/adfm.202202954
PY  - 2022///
SN  - 1616-301X
TI  - Addition of diquat enhances the electron mobility in various non-fullerene acceptor molecules
T2  - Advanced Functional Materials
UR  - http://dx.doi.org/10.1002/adfm.202202954
UR  - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000825871400001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://onlinelibrary.wiley.com/doi/10.1002/adfm.202202954
ER  -

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