Publication: Synthesis and characterization of carbazolo[2,1-a]carbazole in thin film and single crystal field-effect transistors
Authors
Más-Montoya, Miriam ; Cerón-Carrasco, José Pedro ; Hamao, Shino ; Eguchi, Ritsuko ; Kubozono, Yoshihiro ; Tárraga Tomás, Alberto ; Curiel Casado, David
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Publisher
Royal Society of Chemistry
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DOI
10.1039/c7tc02139a
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info:eu-repo/semantics/article
Description
Abstract
The synthesis of a hexacyclic fused polyheteroaromatic system, namely carbazolo[2,1-a]carbazole, using a simple two-step route is reported. Additionally, the characterization of its electronic structure is described, corresponding to a very stable molecule that is also transparent to the visible light. The solid state packing is determined by X-ray diffraction analysis which, in combination with the computational calculation of the charge transfer parameters, reveals an adequate molecular arrangement to achieve a low anisotropic environment for charge transport. This π-conjugated system is used as organic semiconductor for the fabrication of thin film and single crystal organic field-effect transistors (OFETs). Furthermore, the evaluation of different gate dielectrics results in transistors with very good hole mobilities and low operating voltages. In agreement with these results, carbazolo[2,1-a]carbazole becomes some of the best organic semiconductors belonging to the family of carbazole-based azaphenacenes.
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Citation
J. Mater. Chem. C, 2017, 5, 7020-7027
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