Transparent manganite films as hole injectors for organic light emitting diodes (Articolo in rivista)

Type
Label
  • Transparent manganite films as hole injectors for organic light emitting diodes (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.jlumin.2004.08.036 (literal)
Alternative label
  • I. Bergenti; V. Dediu; M. Murgia; A. Riminucci; G. Ruani; C. Taliani (2004)
    Transparent manganite films as hole injectors for organic light emitting diodes
    in Journal of luminescence
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • I. Bergenti; V. Dediu; M. Murgia; A. Riminucci; G. Ruani; C. Taliani (literal)
Pagina inizio
  • 384 (literal)
Pagina fine
  • 388 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • Conference: 325th Wilhelm and Else Heraeus Seminar on Organic Molecular Solids Location: Bad Honnef, GERMANY Date: MAY 17-19, 2004 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 110 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 4 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR, Istituto per lo Studio dei Materiali Nanstrutturati, Sezione Bologna, I-40129 Bologna, Italy (literal)
Titolo
  • Transparent manganite films as hole injectors for organic light emitting diodes (literal)
Abstract
  • Organic light-emitting diodes (OLEDs) are nowadays one of the most attractive devices based on organic semiconductors due to their successful application in the display technology. Electroluminescence in OLEDs is mainly governed by the fluorescence from excited singlet states, which have large transition probabilities providing the major radiative pathway. The \"forbidden\" triplet state emission can be activated by increasing spin-orbit coupling via dye doping. The singlet-triplet exciton formation statistics is usually given by 1:3 partition due to the quantum constrains. Injection of carriers with finite spin polarisation should influence and modify the recombination statistics and can be used for tuning of the device efficiency. In this context, the development of a new class of electrodes able to guarantee both efficient charge and spin injection becomes of paramount importance. We show that strongly spin polarised colossal magneto resistance manganite La0.7Sr0.3MnO3 (LSMO) can successfully substitute conventional ITO electrodes in OLEDs. Highly transparent, metallic and ferromagnetic LSMO layers were used in combination with standard Al and spin polarised Co top electrodes. Electrical and optical characterisations of the OLEDs with spin polarised electrodes indicate the applicability of the new manganite electrodes for organic light-emitting devices. (literal)
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