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Organic copolymer lasing from single defect microcavity fabricated using laser patterning

Claronino, Peter; Jayaprakash, Rahul; Jessewitsch, Till; Kilbride, Rachel C.; Thornber, Timothy; Muravitskaya, Alina; Oliver, Robert D.J.; Scherf, Ullrich; Bouillard, Jean Sebastien G.; Adawi, Ali M.; Lidzey, David G.


Peter Claronino

Rahul Jayaprakash

Till Jessewitsch

Rachel C. Kilbride

Timothy Thornber

Alina Muravitskaya

Robert D.J. Oliver

Ullrich Scherf

David G. Lidzey


Reducing the lasing threshold in optically pumped organic lasers is a necessary component of the drive to develop an organic laser diode, as this may help mitigate the losses associated with electrical contacts and charge injection. In this study we show how increasing the binaphthyl (BN) spacer content in polydioctylfluorene (PFO) decreases its amplified spontaneous emission threshold (ASE) through the suppression of intermolecular interactions. Using co-polymers with low lasing thresholds, we use a laser patterning technique to fabricate physical defects (having a diameter of ∼2.5 μm) within a vertical microcavity. Such defects create additional lateral confinement, with this approach allowing us to reduce the lasing threshold from 11 μJ cm−2 to 7 μJ cm−2 and increase cavity Q-factor from 495 (planar cavity) to 2300. The enhanced performance and the stack structure of the defect microcavity show it is a promising architecture for an electrically-pumped laser device.


Claronino, P., Jayaprakash, R., Jessewitsch, T., Kilbride, R. C., Thornber, T., Muravitskaya, A., …Lidzey, D. G. (2023). Organic copolymer lasing from single defect microcavity fabricated using laser patterning. Journal of Materials Chemistry C,

Journal Article Type Article
Acceptance Date Mar 10, 2023
Online Publication Date Mar 24, 2023
Publication Date Mar 24, 2023
Deposit Date Mar 26, 2023
Publicly Available Date Mar 27, 2023
Journal Journal of Materials Chemistry C
Print ISSN 2050-7526
Electronic ISSN 2050-7534
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Keywords Materials Chemistry; General Chemistry
Public URL


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