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Multilevel, room-temperature nanoimprint lithography for conjugated polymer-based photonics

TitoloMultilevel, room-temperature nanoimprint lithography for conjugated polymer-based photonics
Tipo di pubblicazioneArticolo su Rivista peer-reviewed
Anno di Pubblicazione2005
AutoriMele, E., Di Benedetto Francesca, Persano L., Cingolani R., and Pisignano D.
RivistaNano Letters
Volume5
Paginazione1915-1919
ISSN15306984
Parole chiaveBragg periodicity, Crystals, Light emission, Lithography, Luminescence, Organic light-emitting polymers, Organic polymers, Photons, Polymer semiconductors
Abstract

We demonstrate the multilevel patterning of organic light-emitting polymers by room-temperature nanoimprint lithography (RT-NIL), which is impossible to obtain by conventional hot embossing. In particular, we realize one- and two-dimensional photonic crystals with 500 nm periodic features and investigate the changes in the optical properties (luminescence and quantum yield) of the organic active layer. An increase of the quantum yield by 2.4% for the patterned film with respect to the untextured one and the enhancement of the output light emitted at a particular angle (0 = 69°) are observed for gratings whose Bragg periodicity matched the emission wavelength of the polymer. The employment of RT-NIL to pattern polymer semiconductors without degradation of their optical properties represents a strategic route for the realization of novel nanopatterned optoelectronic devices. © 2005 American Chemical Society.

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cited By 61

URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-27544468801&doi=10.1021%2fnl051234p&partnerID=40&md5=2f7fa454eb478c567ff403408e3db77a
DOI10.1021/nl051234p
Citation KeyMele20051915