Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 114, Issue 1, Pages 139-142Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp9086128
Keywords
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Funding
- NSF [CHE-0427746, DMR-0820521]
- Nebraska Research Initiative
- Holland Computing Center at University of Nebraska
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We design a new class of chemically modified graphenes through selective hydrogenation, which contain an array of triangular carbon domains separated by hydrogenated carbon stripes. By using a density-functional theory method within the generalized gradient approximation in the Perdew-Burke-Ernzerhof functional form, we show that each carbon triangle possesses notable magnetic moment on the edges. The chemically patterned graphene can be also viewed as an array of semiconducting quantum dots, where the hydrogenated carbon stripes play the role of quantum confinement. By adjusting the width of hydrogenated carbon stripes or the length scale of uncoated carbon triangles, the magnetic moment, band gap, and optical properties of the selectively hydrogenated graphene can be tuned.
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