Journal article
Photoconductivity of solution-processed MoS2 films
Publication Details
Authors: | Cunningham, G.; Khan, U.; Backes, C.; Hanlon, D.; McCloskey, D.; Donegan, J.; Coleman, J. |
Publisher: | ROYAL SOC CHEMISTRY |
Publication year: | 2013 |
Journal: | Journal of Materials Chemistry C |
Pages range : | 6899-6904 |
Journal acronym: | J. Mater. Chem. C |
Volume number: | 1 |
Issue number: | 41 |
Start page: | 6899 |
End page: | 6904 |
Number of pages: | 6 |
ISSN: | 2050-7526 |
DOI-Link der Erstveröffentlichung: |
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 similar to 1 kW m(-2) 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 at low intensity was similar to 10(-4) A per W at 15 V. This work demonstrates the potential for liquid-exfoliated, inorganic nanosheets to be fabricated into low-cost optoelectronic devices.
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 similar to 1 kW m(-2) 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 at low intensity was similar to 10(-4) A per W at 15 V. This work demonstrates the potential for liquid-exfoliated, inorganic nanosheets to be fabricated into low-cost optoelectronic devices.
