Al‐Jashaam, F.L., Jayaprakash, R., Coles, D.M. et al. (3 more authors) (2019) Optical‐mode structure of micropillar microcavities containing a fluorescent conjugated polymer. Advanced Quantum Technologies. 1900067. ISSN 2511-9044
Abstract
The light emission from a series of micropillar microcavities containing a fluorescent, red‐emitting conjugated polymer, is explored. Cavities are fabricated by defining two dielectric mirrors either side of a polymer active region. Focused ion‐beam (FIB) lithography is then used to etch pillar structures into the planar cavity having diameters between 1 and 11 µm. The photoluminescence (PL) emission of the cavities is characterized using real‐space tomographic and Fourier‐space imaging techniques, with emission shown to be quantized into a mode‐structure resulting from both vertical and lateral optical confinement within the pillar. The optical‐confinement effects which result in a blue‐shift of the fundamental mode as the pillar diameter is reduced is demonstrated, with a model applied to describe the energy and distribution of the confined optical modes.
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Copyright, Publisher and Additional Information: | © 2019 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim. This is an author-produced version of a paper subsequently published in Advanced Quantum Technologies. Uploaded in accordance with the publisher's self-archiving policy. | ||||
Keywords: | conjugated polymers; microcavities; micropillars; mode‐quantization; organic semiconductors | ||||
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Institution: | The University of Sheffield | ||||
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) | ||||
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Depositing User: | Symplectic Sheffield | ||||
Date Deposited: | 14 Nov 2019 11:09 | ||||
Last Modified: | 04 Nov 2020 01:39 | ||||
Status: | Published online | ||||
Publisher: | Wiley | ||||
Identification Number: | https://doi.org/10.1002/qute.201900067 |