Titolo | Multilevel, room-temperature nanoimprint lithography for conjugated polymer-based photonics |
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Tipo di pubblicazione | Articolo su Rivista peer-reviewed |
Anno di Pubblicazione | 2005 |
Autori | Mele, E., Di Benedetto Francesca, Persano L., Cingolani R., and Pisignano D. |
Rivista | Nano Letters |
Volume | 5 |
Paginazione | 1915-1919 |
ISSN | 15306984 |
Parole chiave | Bragg 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. |
Note | cited By 61 |
URL | https://www.scopus.com/inward/record.uri?eid=2-s2.0-27544468801&doi=10.1021%2fnl051234p&partnerID=40&md5=2f7fa454eb478c567ff403408e3db77a |
DOI | 10.1021/nl051234p |
Citation Key | Mele20051915 |