Al‐Jashaam, F.L., Jayaprakash, R., Coles, D.M. et al. (3 more authors) (2020) Optical‐mode structure of micropillar microcavities containing a fluorescent conjugated polymer. Advanced Quantum Technologies, 3 (2). 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.
Metadata
Item Type: | Article |
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Authors/Creators: |
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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 |
Dates: |
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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) |
Funding Information: | Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL (EPSRC) EP/M025330/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 14 Nov 2019 11:09 |
Last Modified: | 23 May 2024 08:58 |
Status: | Published |
Publisher: | Wiley |
Refereed: | Yes |
Identification Number: | 10.1002/qute.201900067 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:153481 |