Dramatic Inversion of Charge Polarity in Diketopyrrolopyrrole-Based Organic Field-Effect Transistors via a Simple Nitrile Group Substitution

Dramatic Inversion of Charge Polarity in Diketopyrrolopyrrole-Based Organic Field-Effect Transistors via a Simple Nitrile Group Substitution

A record‐breaking high electron mobility of 7.0 cm2V−1s−1 for n‐channel polymer OFETs is reported. By the incorporation of only one nitrile group as an electron‐withdrawing function in the vinyl linkage of the DPP‐based copolymer, a dramatic inversion of majority charge‐carriers from holes to electr...

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Veröffentlicht in:Advanced materials (Weinheim) 2014-11, Vol.26 (43), p.7300-7307
Hauptverfasser: Yun, Hui-Jun, Kang, Seok-Ju, Xu, Yong, Kim, Seul Ong, Kim, Yun-Hi, Noh, Yong-Young, Kwon, Soon-Ki
Format: Artikel
Sprache:eng
Schlagworte:
Charge
charge trapping effect
conjugated polymers
Copolymers
diketopyrrolopyrrole
Electron mobility
electron-withdrawing groups
Field effect transistors
Inversions
Linkages
n-type organic field-effect transistors
Nitriles
Polarity
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Zusammenfassung:A record‐breaking high electron mobility of 7.0 cm2V−1s−1 for n‐channel polymer OFETs is reported. By the incorporation of only one nitrile group as an electron‐withdrawing function in the vinyl linkage of the DPP‐based copolymer, a dramatic inversion of majority charge‐carriers from holes to electrons is achieved.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201403262