Light-Emitting Diodes from Partially Conjugated Poly(p-phenylene vinylene)

Author Info

C. Zhang, University of California at Santa Barbara
David Braun, University of California at Santa BarbaraFollow
A. J. Heeger, University of California at Santa Barbara

Recommended Citation

Postprint version. Published in Journal of Applied Physics, Volume 73, Issue 10, May 15, 1993, pages 5177-5180.

NOTE: At the time of publication, the author David Braun was not yet affiliated with Cal Poly.

The definitive version is available at https://doi.org/10.1063/1.353794.

Abstract

We report the effect of conversion conditions on the device characteristics of poly(p-phenylene vinylene) (PPV) light-emitting diodes. Both electroluminescence and photoluminescence intensities decrease with increasing degree of conversion. Partial conjugation enhances the electroluminescence intensity and gives an efficiency (with Ca as electron-injecting contact) as high as 0.75% photons per electron, about two orders of magnitude more efficient than from similar devices prepared from fully converted PPV. The results of constant current stress measurements suggest that the partially conjugated PPV diode is relatively stable at room temperature.

Disciplines

Electrical and Computer Engineering

Copyright

1993 American Institute of Physics.

Publisher statement

This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Journal of Applied Physics