期刊
NANOSCALE
卷 8, 期 25, 页码 12773-12779出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6nr02554d
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- Global Frontier R&D Program at the Center for Hybrid Interface Materials (HIM) - Ministry of Science, ICT & Future Planning [2013M3A6B1078873]
We report the first air-passivated ambipolar BP transistor formed by applying benzyl viologen, which serves as a surface charge transfer donor for BP flakes. The passivated BP devices exhibit excellent stability under both an ambient atmosphere and vacuum; their transistor performance is maintained semi-permanently. Unlike their intrinsic p-type properties, passivated BP devices present advantageous ambipolar properties with much higher electron mobility up to similar to 83 cm(2) V-1 s(-1) from 2-terminal measurement at 300 K, compared to other reported studies on n-type BP transistors. On the basis of the n-type doping effect that originated from benzyl viologen, we also systematically investigated the BP thickness dependence of our devices on electrical properties, in which we found the best electron transport performance to be attained when an similar to 10 nm thick BP flake was used.
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