Synergetically Enhanced Near-Infrared Photoresponse of Reduced Graphene Oxide by Upconversion and Gold Plasmon

Synergetically Enhanced Near-Infrared Photoresponse of Reduced Graphene Oxide by Upconversion and Gold Plasmon

A new route to improve responsivity of reduced graphene oxide (rGO)‐based near‐infrared photodetectors is reported by coupling upconversion and gold plasmon. Near‐infrared light is converted by upconversion nanoparticle into shorter wavelengths that can readily be absorbed by rGO. Further coupling o...

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Veröffentlicht in:Small (Weinheim an der Bergstrasse, Germany) Germany), 2014-09, Vol.10 (18), p.3637-3643
Hauptverfasser: Niu, Wenbin, Chen, Hu, Chen, Rui, Huang, Jingfeng, Palaniappan, Alagappan, Sun, Handong, Liedberg, Bo Gunnar, Tok, Alfred Iing Yoong
Format: Artikel
Sprache:eng
Schlagworte:
Gold
gold plasmon
Graphene
Joining
Nanotechnology
near-infrared photodetectors
Oxides
Plasmonics
Plasmons
reduced graphene oxide
Upconversion
upconversion nanoparticles
Wavelengths
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Zusammenfassung:A new route to improve responsivity of reduced graphene oxide (rGO)‐based near‐infrared photodetectors is reported by coupling upconversion and gold plasmon. Near‐infrared light is converted by upconversion nanoparticle into shorter wavelengths that can readily be absorbed by rGO. Further coupling of plasmonic layer increased upconversion emissions and rGO absorption, resulting in an overall enhancement of photo­responsivity by 10 times.
ISSN:1613-6810
1613-6829
DOI:10.1002/smll.201400400