title: Emission enhancement and polarization of semiconductor quantum dots with nanoimprinted plasmonic cavities: towards scalable fabrication of plasmon-exciton displays.
abstract: Here we present an application of a high throughput nanofabrication technique to the creation of a plasmonic metasurface and demonstrate its application to the enhancement and control of radiation by quantum dots (QDs). The metasurface consists of an array of cold-forged rectangular nanocavities in a thin silver film. High quantum efficiency graded alloy CdSe/CdS/ZnS quantum dots were spread over the metasurface and the effects of the plasmon-exciton interactions characterised. We found a four-fold increase in the QDs radiative decay rate and emission brightness, compared to QDs on glass, along with a degree of linear polarisation of 0.73 in the emitted field. Such a surface could be easily integrated with current QD display or organic solar cell designs.
authors.affiliation: School of Physics, The University of Melbourne, Parkville, VIC 3010, Australia. jcadusch@student.unimelb.edu.au.
authors.forename: Jasper J
authors.initials: JJ
authors.lastname: Cadusch
authors.forename: Evgeniy
authors.initials: E
authors.lastname: Panchenko
authors.forename: Nicholas
authors.initials: N
authors.lastname: Kirkwood
authors.forename: Timothy D
authors.initials: TD
authors.lastname: James
authors.forename: Brant C
authors.initials: BC
authors.lastname: Gibson
authors.forename: Kevin J
authors.initials: KJ
authors.lastname: Webb
authors.forename: Paul
authors.initials: P
authors.lastname: Mulvaney
authors.forename: Ann
authors.initials: A
authors.lastname: Roberts