Detailed study of the decay mechanism in polymeric OLEDs

Jörg-Bernd Bonekamp; Adam J. Moulé; Klaus Meerholz

doi:10.1117/12.620517

8 October 2005 Detailed study of the decay mechanism in polymeric OLEDs

Jörg-Bernd Bonekamp, Adam J. Moulé, Klaus Meerholz

Proceedings Volume 5937, Organic Light-Emitting Materials and Devices IX; 593713 (2005) https://doi.org/10.1117/12.620517
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

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.

Citation Download Citation

Jörg-Bernd Bonekamp, Adam J. Moulé, and Klaus Meerholz "Detailed study of the decay mechanism in polymeric OLEDs", Proc. SPIE 5937, Organic Light-Emitting Materials and Devices IX, 593713 (8 October 2005); https://doi.org/10.1117/12.620517

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