Probing of contact formation via light emission from organic field-effect transistors

Feldmeier, Eva J.; Schidleja, Martin; Melzer, Christian; Seggern, Heinz von

doi:10.1016/j.tsf.2010.08.166

Thin Solid Films

2010

DOI: 10.1016/j.tsf.2010.08.166

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Probing of contact formation via light emission from organic field-effect transistors

Eva J. Feldmeier

Martin Schidleja

Christian Melzer

et al.

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Cited by 2 publications

References 24 publications

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Covalently Linked 5,6,11,12‐Tetraazanaphthacene Dimer and Its Triptycene‐Capped Derivatives as Electron Acceptors

Kamebuchi,

Makino,

Hiruma

et al. 2024

Chemistry A European J

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The development of electron transport and n‐type materials is still largely dominated by a limited number of organic semiconductors, with fullerenes at the forefront. In contrast, substantial progress has been made in developing hole transport and p‐type materials. Therefore, expanding the range of electron acceptors, making them solution‐processable, and elucidating their structural arrangement by X‐ray crystallography is essential. We synthesised 2,2’‐bi‐(5,6,11,12‐tetraazanaphthacene) (bi‐TANC) and its triptycene end‐capped derivative, 2,2′‐bi(8,13‐dihydro‐8,13‐[1,2]benzenonaphtho‐5,6,15,16‐tetraazanaphthacene) (bi‐TpTANC), as electron acceptors. Bi‐TANC exhibits a herringbone‐like crystal packing with intermolecular π–π overlap, which is observed in typical organic n‐type semiconductors. However, it showed poor solubility, similar to larger acenes. In contrast, bi‐TpTANC exhibited favourable solubility, and its electrochemistry in solution was investigated. In the cyclic voltammogram of bi‐TpTANC, reversible redox waves corresponding to 3‐step/4‐electron transfer were observed at −0.795 V (1e−), −0.927 V (1e−), and −1.44 V (2e−) as half‐wave potentials. The redox wave associated with the two‐electron transfer on the negative low‐potential side indicates the presence of through‐bond charge delocalisation in the monoanionic state. Furthermore, the LUMO level of bi‐TpTANC is −4.1 eV, which indicates its potential as a promising air‐stable n‐type material.

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Covalently Linked 5,6,11,12‐Tetraazanaphthacene Dimer and Its Triptycene‐Capped Derivatives as Electron Acceptors

Kamebuchi,

Makino,

Hiruma

et al. 2024

Chemistry A European J

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The color change in polychromatic organic light-emitting field-effect transistors: Optical filtering versus reemission

Melzer

Seggern

2014

Organic Electronics

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Probing of contact formation via light emission from organic field-effect transistors

Cited by 2 publications

References 24 publications

Covalently Linked 5,6,11,12‐Tetraazanaphthacene Dimer and Its Triptycene‐Capped Derivatives as Electron Acceptors

Covalently Linked 5,6,11,12‐Tetraazanaphthacene Dimer and Its Triptycene‐Capped Derivatives as Electron Acceptors

The color change in polychromatic organic light-emitting field-effect transistors: Optical filtering versus reemission

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