Dependence of Photocurrent Enhancements in Hybrid Quantum Dot-MoS2 Devices on Quantum Dot Emission Wavelength
File Type:
UnknownItem Type:
Journal ArticleDate:
2019Access:
openAccessCitation:
John J. Gough, Niall McEvoy, Maria O Brien, John McManus, Jorge Garcia-Coindreau, Alan P. Bell, David McCloskey, Calin Hrelescu, Georg S. Duesberg, and A. Louise Bradley, Dependence of Photocurrent Enhancements in Hybrid Quantum Dot-MoS2 Devices on Quantum Dot Emission Wavelength, ACS Photonics, 2019, 976-984Abstract:
The spectral dependence of nonradiative energy transfer (NRET) from three spectrally different quantum dot (QD) ensembles to monolayer MoS2 is reported. The QDs with peak emission wavelengths of 450, 530, and 630 nm induce large photocurrent enhancements in the hybrid devices with monolayer MoS2 islands grown by chemical vapor deposition (CVD). NRET efficiencies of over 90% are observed for each of the QD-MoS2 hybrids, with 3-fold to 6-fold photocurrent enhancements, depending on the spectral overlap between the QDs and the monolayer MoS2. We find good agreement between the trends obtained from the NRET rate and the spectral overlap function showing evidence for a Förster-like energy transfer mechanism in these CdSeS/ZnS QD-MoS2 devices.
Sponsor
Grant Number
Science Foundation Ireland (SFI)
16/IA/4550
Science Foundation Ireland (SFI)
15/SIRG/332
Science Foundation Ireland (SFI)
15/IA/ 31319
Science Foundation Ireland (SFI)
10/IN.1/12975
Author's Homepage:
http://people.tcd.ie/bradlelhttp://people.tcd.ie/dmcclosk
http://people.tcd.ie/mcevoyni
http://people.tcd.ie/duesberg
Description:
PUBLISHEDcited by 1
Type of material:
Journal ArticleCollections
Series/Report no:
ACS PhotonicsAvailability:
Full text availableKeywords:
2D materials, MoS2, Quantum dots, Photocurrent, Energy TransferDOI:
http://dx.doi.org/10.1021/acsphotonics.8b01681Metadata
Show full item recordLicences: