Active liquid crystal tuning of metallic nanoantenna enhanced light emission from colloidal quantum dots

A. Abass, S. Rahimzadeh-Kalaleh Rodriguez, T. Ako, T. Aubert, M.A. Verschuuren, D. Thourhout, Van, J. Beeckmann, Z. Henz, J. Gomez Rivas, B. Maes

Research output: Contribution to journalArticleAcademicpeer-review

32 Citations (Scopus)

Abstract

A system comprising an aluminum nano-antenna array on top of a luminescent colloidal quantum dot waveguide and covered by a thermotropic liquid crystal (LC) is introduced. By heating the LC above its critical temperature, we demonstrate that the concomitant refractive index change modifies the hybrid plasmonic-photonic resonances in the system. This enables active control of the spectrum and directionality of the narrow-band (~6 nm) enhancement of quantum dot photoluminescence by the metallic nano-antennas.
Original languageEnglish
Pages (from-to)5555-5560
Number of pages6
JournalNano Letters
Volume14
Issue number10
DOIs
Publication statusPublished - 2014

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