Improved Performance of All Solution-Processed Graphene Photodetectors via Plasmonic Nanoparticles

A cost-effective approach of building graphene-based photodetectors with Ag nanowires (AgNWs) as the contact electrode on the glass substrate via solution process has been developed. The transmittance of the graphene/glass and the AgNWs/graphene/glass at a wavelength of 550 nm is 74% and 67%, respec...

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Bibliographic Details
Published in:IEEE photonics technology letters 2017-03, Vol.29 (5), p.423-426
Main Authors: Tu, Wei-Chen, Chen, Jeng-Shiung, Tsai, Meng-Lin, Wu, Jhe-Rong, Li, Guan-Yi, Lin, Ming-Yi, Huang, Chun-Ying, Uen, Wu-Yih
Format: Article
Language:English
Subjects:
Electrodes
Glass
Graphene
Nanoparticles
Nanowires
Performance enhancement
Photoconductivity
Photodetectors
Photoelectric emission
Photometers
phototetector
Plasmonics
Plasmons
solution process
Substrates
surface plasmon resonance
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Summary:A cost-effective approach of building graphene-based photodetectors with Ag nanowires (AgNWs) as the contact electrode on the glass substrate via solution process has been developed. The transmittance of the graphene/glass and the AgNWs/graphene/glass at a wavelength of 550 nm is 74% and 67%, respectively. To further improve the performance of the graphene photodetector, Ag nanoparticles are applied on the graphene to obtain the enhanced photocurrent and the improved ON/OFF ratio of 505 by the surface plasmon resonance effect. This semi-transparent graphene photodetector shows the superior optical and electrical performance and it paves the way to the future development of graphene-based devices by costly and high-throughput techniques.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2017.2650993