Crystal phase dependent photoluminescence of 6,13-pentacenequinone (Articolo in rivista)

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  • Crystal phase dependent photoluminescence of 6,13-pentacenequinone (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1063/1.4732078 (literal)
Alternative label
  • P. De Marco1,2, F. Bisti1, F. Fioriti1, M. Passacantando1, C. Bittencourt3, S. Lettieri4, A. Ambrosio4, P. Maddalena4, S. Prezioso1, S. Santucci1, and L. Ottaviano1,2 (2012)
    Crystal phase dependent photoluminescence of 6,13-pentacenequinone
    in Journal of applied physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • P. De Marco1,2, F. Bisti1, F. Fioriti1, M. Passacantando1, C. Bittencourt3, S. Lettieri4, A. Ambrosio4, P. Maddalena4, S. Prezioso1, S. Santucci1, and L. Ottaviano1,2 (literal)
Pagina inizio
  • 013512 (literal)
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  • http://dx.doi.org/10.1063/1.4732078 (literal)
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  • 112 (literal)
Rivista
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  • 4 (literal)
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  • 1 (literal)
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  • 1Dipartimento di Fisica Università dell'Aquila, Via Vetoio 10, 67100 L'Aquila, Italy 2SPIN-CNR (UOS L'Aquila), Via Vetoio 10, 67100 L'Aquila, Italy 3Plasma Surface Interaction Chemistry, University of Mons, Avenue N. Copernic 1, 7000 Mons, Belgium 4SPIN-CNR (UOS Napoli), Via Cintia, 80126 Napoli, Italy and Dipartimento di Scienze Fisiche Università di Napoli \"Federico II\", Via Cintia, 80126 Napoli, Italy (literal)
Titolo
  • Crystal phase dependent photoluminescence of 6,13-pentacenequinone (literal)
Abstract
  • Films of 6,13-pentacenequinone (PQ, C22H12O2) of nominal thicknesses 5 and 30 nm grown in high vacuum onto SiO2 have been UV (325 nm) excited and their photoluminescence (PL) response has been investigated with the support of parallel scanning electron microscopy (FE-SEM) and x-ray diffraction (XRD) experiments. The photoluminescence spectra typically show a multiplet structure that can be ultimately assigned to the sum of the emission spectra from two different crystal phases, namely the \"bulk\" and the \"thin film\" phase, emitting respectively in the 500-600 nm and 600-750 nm spectral ranges. The assignment is done via the systematic parallel SEM and XRD investigation of the samples. Data are also discussed in comparison with PL spectra of PQ reported in the literature. The blue shift of the \"bulk\" phase PL spectrum is assigned to its smaller (about 9% less than in the \"thin film\" phase) molecular packing density in the ab-plane, and accordingly, to a decreased ?-? orbital overlap. (literal)
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