OLED with hole-transporting layer fabricated by ink-jet printing

F. Villani, P. Vacca, R. Miscioscia, G. Nenna, G. Burrasca, T. Fasolino, C. Minarini, D. Della Sala

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Abstract

we report about the fabrication of organic light-emitting diodes (OLEDs) ink-jet printing a hole-transporting polymer (PF6, poly(9,9-dihexyl-9H-fluorene- 2,7- diyl)) on flexible substrate (PET) and performing the other layers through vacuum thermal evaporation. The aim of the work is to employ the ink-jet printing (IJP) technology, familiar as a method for printing on paper, in optoelectronic applications and to determine how the deposition method affects the functional material film properties and hence the ultimate device performances. In this line of work, ink-jet printed polymer films are compared to same spin-coated polymer from the electro- optical point of view: both prepared materials are adopted as HTLs of electroluminescent devices. All manufactured OLEDs are characterized and their behaviours are investigated and analyzed with theoretical models. The results show differences in current density and optical behaviours between the devices fabricated by means of the above mentioned technologies which can be justified in terms of different trap distribution induced by impurity energy levels associated to each process. Copyright © 2009 WILEY-VCH Verlag GmbH & Co. KGaA.
Original languageEnglish
Pages (from-to)101 - 106
Number of pages6
JournalMacromolecular Symposia
Volume286
Issue number1
DOIs
Publication statusPublished - Nov 2009
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Materials Chemistry
  • Polymers and Plastics
  • Condensed Matter Physics

Cite this

Villani, F., Vacca, P., Miscioscia, R., Nenna, G., Burrasca, G., Fasolino, T., ... Della Sala, D. (2009). OLED with hole-transporting layer fabricated by ink-jet printing. Macromolecular Symposia, 286(1), 101 - 106. https://doi.org/10.1002/masy.200951213