TY - JOUR
T1 - Pinpoint operando analysis of the electronic states of a graphene transistor using photoelectron nanospectroscopy
AU - Fukidome, Hirokazu
AU - Nagashio, Kousuke
AU - Nagamura, Naoka
AU - Tashima, Keiichiro
AU - Funakubo, Kazutoshi
AU - Horiba, Koji
AU - Suemitsu, Maki
AU - Toriumi, Akira
AU - Oshima, Masaharu
PY - 2014/6
Y1 - 2014/6
N2 - Graphene is a promising material for next-generation devices owing to its excellent electronic properties. Graphene devices do not, however, exhibit the high performance that is expected considering graphene's intrinsic electronic properties. Operando, i.e., gate-controlled, photoelectron nanospectroscopy is needed to observe electronic states in device operation conditions. We have achieved, for the first time, pinpoint operando core-level photoelectron nanospectroscopy of a channel of a graphene transistor. The direct relationship between the graphene's binding energy and the Fermi level is reproduced by a simulation assuming linear band dispersion. This operando nanospectroscopy will bridge the gap between electronic properties and device performance.
AB - Graphene is a promising material for next-generation devices owing to its excellent electronic properties. Graphene devices do not, however, exhibit the high performance that is expected considering graphene's intrinsic electronic properties. Operando, i.e., gate-controlled, photoelectron nanospectroscopy is needed to observe electronic states in device operation conditions. We have achieved, for the first time, pinpoint operando core-level photoelectron nanospectroscopy of a channel of a graphene transistor. The direct relationship between the graphene's binding energy and the Fermi level is reproduced by a simulation assuming linear band dispersion. This operando nanospectroscopy will bridge the gap between electronic properties and device performance.
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U2 - 10.7567/APEX.7.065101
DO - 10.7567/APEX.7.065101
M3 - Article
AN - SCOPUS:84904650445
VL - 7
JO - Applied Physics Express
JF - Applied Physics Express
SN - 1882-0778
IS - 6
M1 - 065101
ER -