Graphene Nanoribbons and 2D Materials for Novel Device Applications（2）

2014中国国际石墨烯创新大会（Grap-China 2014）——1D graphene nanoribbons have tunable electronic bandgaps, thereby enabling graphene electronic/optoelectronic applications. We have demonstrated both bottom-up and top-down methods for fabricating graphene nanoribbons. First, we present surface-assisted bottom-up fabrication of atomically precise armchair graphene nanoribbons (AGNRs) with predefined widths, namely 7-, 14- and 21-AGNRs, on Ag (111) as well as their spatially resolved width-dependent electronic structures.Second, we demonstrate the top-down fabrication of an intramolecular junction by the controllable unzipping of single-walled carbon nanotubes, combining a graphene nanoribbon and single-walled carbon nanotube in a 1D nanostructure.This junction shows strong gate-dependent rectifying behavior, and we demonstrate the use of the junction in prototype directionally dependent field-effect transistors, logic gates and high performance photodetectors.

关键词： 石墨烯纳米带 二维材料 设备应用 禁带 2014中国国际石墨烯创新大会（Grap-China 2014）

主讲人：Prof. Andrew T.S. Wee 机构：National University of Singapore

时长：0:18:43 年代：2014年