Optical properties of microstructured surface-grown and transferred organic nanofibers

Specially designed surface micro- and nanostructures allow one to steer the bottom up self-organized growth of crystalline nanoaggregates from wide bandgap organic molecules, which possess extraordinary optoelectronic properties. Polarized light-emitting para-hexaphenylene nanofiber arrays exemplify...

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Bibliographic Details
Published in:Journal of nanophotonics 2011-01, Vol.5 (1), p.051701-051701
Main Authors: Kjelstrup-Hansen, Jakob, Tavares, Luciana, de Oliveira Hansen, Roana M, Liu, Xuhai, Bordo, Kirill, Rubahn, Horst-Gnter
Format: Article
Language:English
Subjects:
Arrays
Devices
Nanocomposites
Nanofibers
Nanomaterials
Nanostructure
Optical properties
Polarization
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Summary:Specially designed surface micro- and nanostructures allow one to steer the bottom up self-organized growth of crystalline nanoaggregates from wide bandgap organic molecules, which possess extraordinary optoelectronic properties. Polarized light-emitting para-hexaphenylene nanofiber arrays exemplify such "self-growing" nanophotonic devices. The methodology behind this growth is an alternative to transfer of nanofiber arrays from specific growth substrates onto device platforms. We compared the optical properties of transferred and grown nanofibers in terms of polarization function and emission homogeneity and also studied the temperature dependence of the emission spectra of transferred nanofiber arrays. Both types of nanofibers show the same spatial emission characteristics along their long axes and also the same polarization ratio. However, in nanofiber arrays, the polarization ratio decreases in the case of structured surface-grown nanofibers since the mutual orientation of the nanofibers is less perfect than for transferred fibers.
ISSN:1934-2608
1934-2608
DOI:10.1117/1.3574401