title: Synergetically enhanced near-infrared photoresponse of reduced graphene oxide by upconversion and gold plasmon.
abstract: 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 photo-responsivity by 10 times.
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore.
authors.forename: Wenbin
authors.initials: W
authors.lastname: Niu
authors.forename: Hu
authors.initials: H
authors.lastname: Chen
authors.forename: Rui
authors.initials: R
authors.lastname: Chen
authors.forename: Jingfeng
authors.initials: J
authors.lastname: Huang
authors.forename: Alagappan
authors.initials: A
authors.lastname: Palaniappan
authors.forename: Handong
authors.initials: H
authors.lastname: Sun
authors.forename: Bo Gunnar
authors.initials: BG
authors.lastname: Liedberg
authors.forename: Alfred Iing Yoong
authors.initials: AI
authors.lastname: Tok
keywords: gold plasmon; near-infrared photodetectors; reduced graphene oxide; upconversion nanoparticles