Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5488999 | Current Applied Physics | 2016 | 30 Pages |
Abstract
We report hydrogen adsorption on twisted bilayer graphene (tBLG). Raman spectroscopy and the electrical transport properties (electrical resistance and thermoelectric power) confirm the electron doping by hydrogen adsorption, in agreement with the previous report involving exfoliated bilayer graphene (BLG). Common electron doping behaviors were observed at various twist angles (0°, 5°, 12.5°, and 30°), and the adsorptions follow the first-order Langmuir-type adsorption model. Specifically, we analyzed the off-state currents, with band-gap openings of around 13 meV in tBLG with twist angle of 0°, as in Bernal-stacked BLG.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Sung Ju Hong, Min Park, Hojin Kang, Minwoo Lee, David Soler-Delgado, Dae Hong Jeong, Yung Woo Park, Byung Hoon Kim,