Issue 11, 2022

Polariton condensation in a microcavity using a highly-stable molecular dye

Abstract

We have fabricated dielectric microcavities containing the molecular dye 1,4-bis[2-[4-[N,N-di(p-tolyl)amino]phenyl]vinyl]benzene (DPAVB) dispersed in a transparent polymer matrix. We show that despite the relatively broad absorption linewidth of the DPAVB, the cavities enter the strong coupling regime. We use <330 ps pulses at 355 nm from a Nd:YAG laser to generate amplified spontaneous emission from control films and polariton condensation from the strongly-coupled microcavity in air and at room temperature. Here, polariton condensation is observed at an excitation threshold of 215 μJ cm−2. Significantly, we show that the DPAVB dye has a very high degree of photostability, with polariton condensation still observed from the cavity after 37 000 excitation pulses, showing promise for its use in practical polaritonic devices.

Graphical abstract: Polariton condensation in a microcavity using a highly-stable molecular dye

Supplementary files

Article information

Article type
Paper
Submitted
17 11月 2021
Accepted
20 2月 2022
First published
28 2月 2022
This article is Open Access
Creative Commons BY license

J. Mater. Chem. C, 2022,10, 4187-4195

Polariton condensation in a microcavity using a highly-stable molecular dye

K. E. McGhee, R. Jayaprakash, K. Georgiou, S. L. Burg and D. G. Lidzey, J. Mater. Chem. C, 2022, 10, 4187 DOI: 10.1039/D1TC05554B

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