Modification of Electrical Properties of Graphene by Substrate-Induced Nanomodulation

• DOI: 10.1021/nl400827p
• Publication Date: 2013-07-12T16:22:39Z
• Authors: Jong-Kwon Lee; Shiro Yamazaki; Hoyeol Yun; Jinwoo Park; Gary P. Kennedy; Gyu-Tae Kim; Oswald Pietzsch; Roland Wiesendanger; SangWook Lee; Suklyun Hong; Urszula Dettlaff-...; Siegmar Roth
• Keywords: 02 engineering and technology; 0210 nano-technology

A periodically modulated graphene (PMG) generated by nanopatterned surfaces is reported to profoundly modify the intrinsic electronic properties of graphene. The temperature dependence sheet resistivity and gate response measurements clearly show a semiconductor-like behavior. Raman spectroscopy reveals significant shifts G 2D modes induced interaction with underlying grid-like nanostructure. influence periodic, alternating contact substrate surface was studied in terms strain caused bending doping through chemical interactions atoms. Electronic structure calculations performed on model PMG that it possible tune band gap within 0.14-0.19 eV considering both periodic mechanical coordination chemistry. Therefore, can be regarded as further step toward engineering devices.