Single-crystal field-effect transistors of new Cl 2-NDI polymorph processed by sublimation in air

Tao He, Matthias Stolte, Christian Burschka, Nis Hauke Hansen, Thomas Musiol, Daniel Kälblein, Jens Pflaum, Xutang Tao, Jochen Brill, Frank Würthner

Research output: Contribution to journalArticle

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Abstract

Physical properties of active materials built up from small molecules are dictated by their molecular packing in the solid state. Here we demonstrate for the first time the growth of n-channel single-crystal field-effect transistors and organic thin-film transistors by sublimation of 2,6-dichloro-naphthalene diimide in air. Under these conditions, a new polymorph with two-dimensional brick-wall packing mode (β-phase) is obtained that is distinguished from the previously reported herringbone packing motif obtained from solution (α-phase). We are able to fabricate single-crystal field-effect transistors with electron mobilities in air of up to 8.6 cm 2 V -1 s -1 (α-phase) and up to 3.5 cm 2 V -1 s -1 (β-phase) on n-octadecyltriethoxysilane-modified substrates. On silicon dioxide, thin-film devices based on β-phase can be manufactured in air giving rise to electron mobilities of 0.37cm2 V -1 s -1. The simple crystal and thin-film growth procedures by sublimation under ambient conditions avoid elaborate substrate modifications and costly vacuum equipment-based fabrication steps.

Original languageEnglish (US)
Article number5954
JournalNature communications
Volume6
DOIs
StatePublished - Jan 1 2015

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Sublimation
Field effect transistors
Polymorphism
sublimation
crystal field theory
field effect transistors
Electron mobility
Air
Single crystals
electron mobility
air
single crystals
thin films
Electrons
Thin film devices
Equipment and Supplies
bricks
Film growth
Substrates
Thin film transistors

Cite this

He, T., Stolte, M., Burschka, C., Hansen, N. H., Musiol, T., Kälblein, D., ... Würthner, F. (2015). Single-crystal field-effect transistors of new Cl 2-NDI polymorph processed by sublimation in air. Nature communications, 6, [5954]. https://doi.org/10.1038/ncomms6954

Single-crystal field-effect transistors of new Cl 2-NDI polymorph processed by sublimation in air. / He, Tao; Stolte, Matthias; Burschka, Christian; Hansen, Nis Hauke; Musiol, Thomas; Kälblein, Daniel; Pflaum, Jens; Tao, Xutang; Brill, Jochen; Würthner, Frank.

In: Nature communications, Vol. 6, 5954, 01.01.2015.

Research output: Contribution to journalArticle

He, T, Stolte, M, Burschka, C, Hansen, NH, Musiol, T, Kälblein, D, Pflaum, J, Tao, X, Brill, J & Würthner, F 2015, 'Single-crystal field-effect transistors of new Cl 2-NDI polymorph processed by sublimation in air', Nature communications, vol. 6, 5954. https://doi.org/10.1038/ncomms6954
He, Tao ; Stolte, Matthias ; Burschka, Christian ; Hansen, Nis Hauke ; Musiol, Thomas ; Kälblein, Daniel ; Pflaum, Jens ; Tao, Xutang ; Brill, Jochen ; Würthner, Frank. / Single-crystal field-effect transistors of new Cl 2-NDI polymorph processed by sublimation in air. In: Nature communications. 2015 ; Vol. 6.
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