A charge-carrier reservoir is necessary for electrostatic control of the carrier concentration in a solid. The source/drain electrodes serve as carrier reservoirs in a field-effect transistor, but it is still unknown what serves as a reservoir in a technique based on a polar self-assembled monolayer formed underneath a solid to be controlled. Here, the carrier-doping level of isolated single-layer graphene was found to be the same as that of the single-layer part in a flake containing multilayer graphene, indicating that the multilayer part is not a dominant carrier reservoir but adsorbates like oxygen and water serve as a dominant reservoir.
@article{arxiv.2005.11915,
title = {Adsorbates as a charge-carrier reservoir for electrostatic carrier doping to graphene},
author = {Ryo Nouchi and Kei-ichiro Ikeda},
journal= {arXiv preprint arXiv:2005.11915},
year = {2020}
}
Comments
This is the Accepted Manuscript version of an article accepted for publication in Applied Physics Express. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.7567/1882-0786/ab5e0b