title: Sub-terahertz frequency-domain spectroscopy reveals single-grain mobility and scatter influence of large-area graphene.
abstract: The response of individual domains in wafer-sized chemical vapor deposition graphene is measured by contactless sub-terahertz interferometry, observing the intrinsic optical conductance and reaching very high mobility values. It is shown that charged scatterers limit the mobility, validating previous theoretical predictions, and sub-terahertz quality assessment is demonstrated, as necessary for large-scale applications in touchscreens, as well as wearable and optoelectronic devices.
authors: 1. Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, D-70550, Stuttgart, Germany.
authors: Christian
authors: C
authors: Cervetti
authors: Eric
authors: E
authors: Heintze
authors: Boris
authors: B
authors: Gorshunov
authors: Elena
authors: E
authors: Zhukova
authors: Svyatoslav
authors: S
authors: Lobanov
authors: Alexander
authors: A
authors: Hoyer
authors: Marko
authors: M
authors: Burghard
authors: Klaus
authors: K
authors: Kern
authors: Martin
authors: M
authors: Dressel
authors: Lapo
authors: L
authors: Bogani
mesh_terms: D003300:Copper / Q000737:chemistry; D006108:Graphite / Q000737:chemistry*; D007368:Interferometry / Q000379:methods; D019904:Polymethyl Methacrylate / Q000737:chemistry; D012542:Scattering, Radiation; D012822:Silicon Dioxide / Q000737:chemistry; D013057:Spectrum Analysis / Q000379:methods; D013696:Temperature
chemical_list: D012822:Silicon Dioxide; D006108:Graphite; D003300:Copper; D019904:Polymethyl Methacrylate
keywords: Drude conductivity; IR spectroscopy; graphene; scattering; sub-terahertz