Blue emitting OLED with oxadiazole/carbazole containing active layer

H.C. Neitzert, M. Ferrara, S. Bellone, A. Rubino, S. Concilio, P. Iannelli, P. Vacca, L. Ferrara

Research output: Contribution to conferencePaper

5 Citations (Scopus)

Abstract

The optoelectronic properties of a new type of organic light-emitting diode have been measured, which incorporates in the active layer a molecule containing as well an electron conducting and blue emitting oxadiazole group and a hole conducting carbazole group. The investigated device consists of this active oxadiazole/carbazole layer deposited by spin-coating on transparent conductive oxide (TCO) covered glass substrate and top aluminium contacts for electron injection. We compared two types of devices, with and without the insertion of a 40nm thick spin-coated PEDOT layer as hole injector between the active and the TCO layer. Stable blue emission has been observed only for the device with inserted PEDOT layer with an inset of the light emission at an applied voltage of 10V. For devices without PEDOT layer a much higher threshold voltage for light emission and a lower quantum efficiency as compared to the device with intermediate PEDOT layer has been found.
Original languageEnglish
DOIs
Publication statusPublished - 2005
Externally publishedYes
EventPhotonic Materials, Devices, and Applications - , Spain
Duration: 1 Jan 2005 → …

Conference

ConferencePhotonic Materials, Devices, and Applications
CountrySpain
Period1/1/05 → …

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Neitzert, H. C., Ferrara, M., Bellone, S., Rubino, A., Concilio, S., Iannelli, P., ... Ferrara, L. (2005). Blue emitting OLED with oxadiazole/carbazole containing active layer. Paper presented at Photonic Materials, Devices, and Applications, Spain. https://doi.org/10.1117/12.608989