Browsing Chemistry (Scholarly Publications) by Author "YIM, CHANYOUNG"
Now showing items 1-3 of 3
-
Characterization of graphene-silicon Schottky barrier diodes using impedance spectroscopy
DUESBERG, GEORG; YIM, CHANYOUNG; MCEVOY, NIALL (2013)We investigate the interface characteristics of graphene-silicon Schottky barrier diodes using dc current-voltage measurements and ac impedance spectroscopy (IS). Diode parameters, including the ideality factor and the ... -
Heterojunction hybrid devices from vapor phase grown MoS 2
DUESBERG, GEORG; YIM, CHANYOUNG; MCEVOY, NIALL (2014)We investigate a vertically-stacked hybrid photodiode consisting of a thin n-type molybdenum disulfide (MoS2) layer transferred onto p-type silicon. The fabrication is scalable as the MoS2 is grown by a controlled and ... -
Investigation of the optical properties of MoS2 thin films using spectroscopic ellipsometry
DUESBERG, GEORG; LUNNEY, JAMES; MCEVOY, NIALL; YIM, CHANYOUNG (2014)Spectroscopic ellipsometry (SE) characterization of layered transition metal dichalcogenide (TMD) thin films grown by vapor phase sulfurization is reported. By developing an optical dispersion model, the extinction coefficient ...