Electro-optical limits of organic LED investigated through temperature and applied field dependencies

TitleElectro-optical limits of organic LED investigated through temperature and applied field dependencies
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2013
AuthorsNenna, G., De Girolamo Del Mauro Anna, Miscioscia Riccardo, Fasolino T., Pandolfi G., and Minarini Carla
JournalPolymer Composites
Volume34
Pagination1477-1482
ISSN02728397
KeywordsAmorphous organic materials, Charge carrier injection, Electric fields, Electric properties, Electrical and optical properties, Electro-optical, glass, Glass transition, Organic light emitting diodes (OLED), Organic light emitting diodes(OLEDs), Parameter evaluation, Surface glass transitions, Temperature-dependent electrical properties
Abstract

In this article, the electrical and optical properties of organic light emitting diodes (OLEDs) are analyzed, deriving the devices limits at high applied electric fields and at different temperatures. The temperature failures zones have been evaluated, studying the temperature-dependent electrical properties of the OLEDs by means of barrier parameter evaluation, and observing the charge carrier injection at metal/organic interfaces. In particular, for different device thicknesses, it is possible to detect both the surface glass transition point and the complete bulk glass transition of the amorphous organic material employed eventually correlating such mechanisms to device limitations at high applied field. © 2013 Society of Plastics Engineers.

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URLhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84882262402&partnerID=40&md5=db739879c9756fe0174155b0fbd56471
DOI10.1002/pc.22450