On Resonant Scatterers As a Factor Limiting Carrier Mobility in Graphene

On resonant scatterers as a factor limiting carrier mobility in graphene.

We show that graphene deposited on a substrate has a non-negligible density of atomic scale defects. This is evidenced by a previously unnoticed D peak in the Raman spectra with intensity of ∼1% with respect to the G peak. We evaluated the effect of such impurities on electron transport by mimicking them with hydrogen adsorbates and measuring the induced changes in both mobility and Raman inten...

Defects as a factor limiting carrier mobility in WSe2: a spectroscopic investigation

1 Department of Physics and Jiangsu Key laboratory for Advanced Metallic Materials, Southeast University, Nanjing 211189, China. 2 National Laboratory of Solid State Microstructure, School of Electronic Science and Engineering, National Center of Microstructures and Quantum Manipulation, Nanjing University, Nanjing 210093, China. 3 SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of the Ministr...

Dopant morphology as the factor limiting graphene conductivity

Graphene's low intrinsic carrier concentration necessitates extrinsic doping to enhance its conductivity and improve its performance for application as electrodes or transparent conductors. Despite this importance limited knowledge of the doping process at application-relevant conditions exists. Employing in-situ carrier transport and Raman characterization of different dopants, we here explore...

Effect of a High-w Environment on Charge Carrier Mobility in Graphene

Pressure as a Limiting Factor for Life

Facts concerning the stability and functioning of key biomolecular components suggest that cellular life should no longer be viable above a few thousand atmospheres (200-300 MPa). However, organisms are seen to survive in the laboratory to much higher pressures, extending into the GPa or even tens of GPa ranges. This is causing main questions to be posed concerning the survival mechanisms of si...