title: Quantum dots-nanogap metamaterials fabrication by self-assembly lithography and photoluminescence studies.
abstract: We present a new and versatile technique of self-assembly lithography to fabricate a large scale Cadmium selenide quantum dots-silver nanogap metamaterials. After optical and electron microscopic characterizations of the metamaterials, we performed spatially resolved photoluminescence transmission measurements. We obtained highly quenched photoluminescence spectra compared to those from bare quantum dots film. We then quantified the quenching in terms of an average photoluminescence enhancement factor. A finite difference time domain simulation was performed to understand the role of an electric field enhancement in the nanogap over this quenching. Finally, we interpreted the mechanism of the photoluminescence quenching and proposed fabrication method of new metamaterials using our technique.
authors.forename: Laxmi Narayan
authors.initials: LN
authors.lastname: Tripathi
authors.forename: Taehee
authors.initials: T
authors.lastname: Kang
authors.forename: Young-Mi
authors.initials: YM
authors.lastname: Bahk
authors.forename: Sanghoon
authors.initials: S
authors.lastname: Han
authors.forename: Geunchang
authors.initials: G
authors.lastname: Choi
authors.forename: Jiyeah
authors.initials: J
authors.lastname: Rhie
authors.forename: Jeeyoon
authors.initials: J
authors.lastname: Jeong
authors.forename: Dai-Sik
authors.initials: DS
authors.lastname: Kim