http://www.cnr.it/ontology/cnr/individuo/prodotto/ID279304

Electron-Beam Nanopatterning and Spectral Modulation of Organic Molecular Light-Emitting Single Crystals (Articolo in rivista)

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Electron-Beam Nanopatterning and Spectral Modulation of Organic Molecular Light-Emitting Single Crystals (Articolo in rivista) (literal)

Anno

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Alternative label

Persano L. [ 1 ] ; Camposeo A. [ 1 ] ; Pisignano D. [ 1,2 ] ; Burini A. [ 3 ] ; Spearman P. [ 3,4 ] ; Tavazzi S. [ 3 ] (2014)
Electron-Beam Nanopatterning and Spectral Modulation of Organic Molecular Light-Emitting Single Crystals
in Langmuir; AMER CHEMICAL SOC, WASHINGTON (Stati Uniti d'America)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Persano L. [ 1 ] ; Camposeo A. [ 1 ] ; Pisignano D. [ 1,2 ] ; Burini A. [ 3 ] ; Spearman P. [ 3,4 ] ; Tavazzi S. [ 3 ] (literal)

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[ 1 ] CNR, Ist Nanosci, NNL, I-73100 Lecce, Italy [ 2 ] Univ Salento, Dipartimento Matemat & Fis Ennio De Giorgi, I-73100 Lecce, Italy [ 3 ] Univ Milano Bicocca, Dipartimento Sci Mat, I-20125 Milan, Italy [ 4 ] Univ Kingston, SEC Fac, Ctr Mat Res, Kingston Upon Thames KT1 2EE, Surrey, England (literal)

Titolo

Electron-Beam Nanopatterning and Spectral Modulation of Organic Molecular Light-Emitting Single Crystals (literal)

Abstract

The nanopatterning of light-emitting molecular crystals with semiconducting properties can be crucial for the development of future optoelectronic and nanoelectronic devices based on organic materials. In this respect, electron-beam writing is a powerful tool to realize patterns at the nanoscale, but it is still rarely applied to active organic materials. Here, sub-100-nm-scale nanopatterning is performed on the surface of quaterthiophene monocrystals by direct maskless electron-beam writing. Gratings are produced on organic crystals with periods ranging from 80 nm to 1 pm and single-line lateral dimensions ranging from 20 to 500 nm, with electron-beam exposure doses between 100 and 1500 mu C/cm(2). The morphological and texturing properties of the pattern are discussed, together with the interaction mechanisms between the electron beam and the crystal. The resulting modulation of the light emission is consistent with Bragg scattering from the patterned periodic features. (literal)

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