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Materials study demonstrates scalable growth of aligned graphene on commercial copper foils, highlighting potential for inexpensive large-scale heterostructures with angle-tunable optoelectronics.
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.
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Brown et al. (2014) studied this question.
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