Pursuing High-Mobility n-Type Organic Semiconductors by Combination of "Molecule-Framework" and "Side-Chain" Engineering.

Zhang, Cheng; Zang, Yaping; Zhang, Fengjiao; Diao, Ying; McNeill, Christopher R; Di, Chong-An; Zhu, Xiaozhang; Zhu, Daoben · Adv Mater · 2016

basic_science · Level V

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Abstract

"Molecule-framework" and "side-chain" engineering is powerful for the design of high-performance organic semiconductors. Based on 2DQTTs, the relationship between molecular structure, film microstructure, and charge-transport property in organic thin-film transistors (OTFTs) is studied. 2DQTT-o-B exhibits outstanding electron mobilities of 5.2 cm<sup>2</sup> V<sup>-1</sup> s<sup>-1</sup> , which is a record for air-stable solution-processable n-channel small-molecule OTFTs to date.