Polycrystalline Graphene with Single Crystalline Electronic Structure
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- 作者：Lola Brown ; Edward B. Lochocki ; Jos茅 Avila ; Cheol-Joo Kim ; Yui Ogawa ; Robin W. Havener ; Dong-Ki Kim ; Eric J. Monkman ; Daniel E. Shai ; Haofei I. Wei ; Mark P. Levendorf ; Mar铆a Asensio ; Kyle M. Shen ; Jiwoong Park
- 刊名：Nano Letters
- 出版年：2014
- 出版时间：October 8, 2014
- 年：2014
- 卷：14
- 期：10
- 页码：5706-5711
- 全文大小：424K
- ISSN：1530-6992
文摘
We report the scalable growth of aligned graphene and hexagonal boron nitride on commercial copper foils, where each film originates from multiple nucleations yet exhibits a single orientation. Thorough characterization of our graphene reveals uniform crystallographic and electronic structures on length scales ranging from nanometers to tens of centimeters. As we demonstrate with artificial twisted graphene bilayers, these inexpensive and versatile films are ideal building blocks for large-scale layered heterostructures with angle-tunable optoelectronic properties.