Thursday, March 19, 2015

Abstract-Sub-Terahertz Frequency-Domain Spectroscopy Reveals Single-Grain Mobility and Scatter Influence of Large-Area Graphene

  1. Christian Cervetti1
  2. Eric Heintze1
  3. Boris Gorshunov1,2,3
  4. Elena Zhukova1,2,3,
  5. Svyatoslav Lobanov2,3
  6. Alexander Hoyer4,
  7. Marko Burghard4
  8. Klaus Kern4,5
  9. Martin Dressel1 and
  10. Lapo Bogani1,†,*
Article first published online: 18 MAR 2015
DOI: 10.1002/adma.201500599

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 and wearable and optoelectronic devices.

No comments: