Elucidation of an intrinsic parameter for evaluating the electrical quality of graphene flakes.

ABSTRACT: A test method for evaluating the quality of graphene flakes, such as reduced graphene oxide (rGO) and graphene nanopowder (GNP), was developed in this study. The pelletizer was selected for a sampling tool, which enables us to formulate the flake sample as a measurable sample. Various parameters were measured from the pelletized sample in order to elucidate the best parameter for representing the quality of the graphene flakes in terms of their electrical properties. Based on the analysis of 4-probe measurement data on the pelletized sample, the best intrinsic parameter is volume resistivity (or volume conductivity) rather than resistivity (or conductivity). Additionally, the possible modification of a sample before and after the pressurization was investigated by electron microscopy and R

SUBMITTER: Lee HJ 

PROVIDER: S-EPMC6346114 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature