A1 Refereed original research article in a scientific journal
Developing Solution-Processed Distributed Bragg Reflectors for Microcavity Polariton Applications
Authors: Palo Emilia, Papachatzakis Michael A. A., Abdelmagid Ahmed, Qureshi Hassan, Kumar Manish, Salomäki Mikko, Daskalakis Konstantinos S. S.
Publisher: AMER CHEMICAL SOC
Publication year: 2023
Journal: Journal of Physical Chemistry C
Journal name in source: JOURNAL OF PHYSICAL CHEMISTRY C
Journal acronym: J PHYS CHEM C
Volume: 127
Issue: 29
First page : 14255
Last page: 14262
Number of pages: 8
ISSN: 1932-7447
eISSN: 1932-7455
DOI: https://doi.org/10.1021/acs.jpcc.3c01457
Web address : https://doi.org/10.1021/acs.jpcc.3c01457
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/180394168
Improving the performance of organic optoelectronicshas been undervigorous research for decades. Recently, polaritonics has been introducedas a technology that has the potential to improve the optical, electrical,and chemical properties of materials and devices. However, polaritonshave been mainly studied in optical microcavities that are made byvacuum deposition processes, which are costly, unavailable to many,and incompatible with printed optoelectronics methods. Efforts towardthe fabrication of polariton microcavities with solution-processedtechniques have been utterly absent. Herein, we demonstrate for thefirst time strong light-matter coupling and polariton photoluminescencein an organic microcavity consisting of an aluminum mirror and a distributedBragg reflector (DBR) made by sequential dip coating of titanium hydroxide/poly(vinylalcohol) (TiOH/PVA) and Nafion films. To fabricate and develop thesolution-processed DBRs and microcavities, we automatized a dip-coatingdevice that allowed us to produce sub-100 nm films consistently overmany dip-coating cycles. Owning to the solution-based nature of ourDBRs, our results pave the way to the realization of polariton optoelectronicdevices beyond physical deposition methods.
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