Amplified spontaneous emission in free-standing membranes incorporating star-shaped monodisperse π-conjugated truxene oligomers

Guilhabert, B., Laurand, N., Herrnsdorf, J., Chen, Y., Mackintosh, A. R., Kanibolotsky, A. L., Gu, E., Skabara, P. J. , Pethrick, R. A. and Dawson, M. D. (2010) Amplified spontaneous emission in free-standing membranes incorporating star-shaped monodisperse π-conjugated truxene oligomers. Journal of Optics, 12(3), 035503. (doi: 10.1088/2040-8978/12/3/035503)

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Abstract

A light-emitting photoresist comprising a vinyl-ether-based photosensitive polymer host doped with star-shaped π-conjugated truxene–core oligomers is shown to be a promising platform for the realization of soft-matter photonic devices. In particular, a simple process for the fabrication of free-standing membranes with no spin casting and peel-off steps is reported. The approach uses instead the hydrophobic nature of the nanocomposites. Membranes are fabricated, with a concentration of 20 mg ml − 1 of the truxene oligomer denoted as T3, directly on deionized water by ultraviolet flood illumination. The resulting membrane is 94 µm thick on average with a diameter up to 50 mm. Amplified spontaneous emission developing around 435 nm above an ~ 400 µJ cm − 2 threshold is obtained by optical pulse pumping the sample at 355 nm in an edge-emitting photoluminescence configuration. These membranes form a versatile platform for flexible organic semiconductor lasers and optical amplifiers.

Item Type:Articles
Additional Information:The authors thank the Engineering and Physical Sciences Research Council for funding under the grant EP/F05999X/1, HYPIX, Hybrid organic semiconductor/gallium nitride/CMOS smart pixel arrays.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Kanibolotskyy, Mr Oleksandr and Skabara, Professor Peter
Authors: Guilhabert, B., Laurand, N., Herrnsdorf, J., Chen, Y., Mackintosh, A. R., Kanibolotsky, A. L., Gu, E., Skabara, P. J., Pethrick, R. A., and Dawson, M. D.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Journal of Optics
Publisher:IOP Publishing
ISSN:2040-8978
ISSN (Online):2040-8986

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