Emission enhancement of colloidal quantum dots confined in double disc nano-antennas with controlled opening

Year: 2025

Type: article

Abstract: coupling to the excitation (633 nm) and emission (900 nm) wavelengths of the QDs. Experimentally, QDs interfaced with the exposed gap by capillary forces exhibit up to a tenfold increase in photoluminescence compared to a continuous gold film and a 3.5-fold enhancement over nanoantennas with a closed gap. These findings highlight the potential of precise structural control in plasmonic devices to enhance and control emission properties of colloidal light sources.

Source: Nanoscale

DOI: 10.1039/d5nr03524d

Authors: Vaibhav Gupta, José Luis Montaño-Priede, Shu Hu, Eric S. A. Goerlitzer, Mario Zapata-Herrera, Ruben Esteban, Nerea Zabala, Jeremy J. Baumberg, Javier Aizpurua, Nicolas Vogel

Institutions: Friedrich-Alexander-Universität Erlangen-Nürnberg, Indian Institute of Technology Mandi, Material Physics Center, University of Cambridge, Donostia International Physics Center, University of the Basque Country, Ikerbasque

Language: English

Topic: Plasmonic and Surface Plasmon Research

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Funders: Ministerio de Ciencia, Innovación y Universidades, European Commission, Deutsche Forschungsgemeinschaft, Eusko Jaurlaritza, Horizon 2020 Framework Programme, European Regional Development Fund, Agencia Estatal de Investigación

OpenAlex ID: W4416732325