Type

Journal Article

Authors

David Mc Closkey
Umar Khan
John Francis Donegan
Jonathan Nesbit Coleman

Subjects

Physics

Topics
films mos2 nano platelets low cost devices thin films ohmic contacts surface water exfoliated nanosheets optoelectronic devices

Photoconductivity of solution-processed MoS2 films (2013)

Abstract Solution-exfoliated MoS2 nano-platelets were formed into thin films by deposition onto a water surface followed by transfer to indium tin oxide coated glass. After drying, a gold electrode was evaporated on top to give a sandwich structure with quasi-Ohmic contacts. Illumination of this device with broadband light of ~1 kW/m2 intensity gave a fourfold increase in conductivity. The photocurrent increased sub-linearly with intensity and exponentially with time indicating the presence of traps. The photo-responsively was ~10-4 A/W at 15 V, competitive with other 2-dimensional photoconductors. This work demonstrates the potential for liquid-exfoliated, inorganic nanosheets to be fabricated into low-cost optoelectronic devices.
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Full list of authors on original publication

David Mc Closkey, Umar Khan, John Francis Donegan, Jonathan Nesbit Coleman

Experts in our system

1
David Mc Closkey
Trinity College Dublin
Total Publications: 8
 
2
Umar Khan
Trinity College Dublin
Total Publications: 37
 
3
John Francis Donegan
Trinity College Dublin
Total Publications: 166
 
4
Jonathan Coleman
Trinity College Dublin
Total Publications: 217