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Proceedings Paper

Detailed study of the decay mechanism in polymeric OLEDs
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Paper Abstract

Although organic light emitting diodes are generally well characterized, their mechanism of decay, e.g. formation of black spots, is still not fully understood. Here we present a new technique allowing for deeper insight into the degradation process of an OLED by measuring its photovoltaic properties. The results show the possibility to record maps of crucial photovoltaic values with a lateral resolution of 50 microns. Based on these results, we propose a mechanism for the decay process. Black spots in the device are formed during the fabrication process, and the lifetime is determined by the active materials' chemical stability.

Paper Details

Date Published: 8 October 2005
PDF: 6 pages
Proc. SPIE 5937, Organic Light-Emitting Materials and Devices IX, 593713 (8 October 2005); doi: 10.1117/12.620517
Show Author Affiliations
Jörg-Bernd Bonekamp, Univ. of Cologne (Germany)
Adam J. Moulé, Univ. of Cologne (Germany)
Klaus Meerholz, Univ. of Cologne (Germany)


Published in SPIE Proceedings Vol. 5937:
Organic Light-Emitting Materials and Devices IX
Zakya H. Kafafi; Paul A. Lane, Editor(s)

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