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Proceedings Paper

Light-emitting devices based on sequentially adsorbed layers of poly(p-phenylene vinylene) (PPV) and poly(acrylic acid) (PAA)
Author(s): Michael F. Durstock; Michael F. Rubner
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Paper Abstract

We have recently reported on the fabrication of organic light emitting devices based on sequentially adsorption layers of a polycationic poly(p-phenylene vinylene) (PPV) precursor and poly(methacrylic acid) (PMA). Here we have fabricated devices with PPV precursor and poly(acrylic acid) (PAA) in an effort to further improve device performance by controlling the nature of the polyanion with which the PPV precursor is assembled. We have seen dramatic differences in device performance by systematically varying the bilayer composition and the total film thickness by controlling the solution parameters and the total number of bilayers deposited. In addition, the conversion temperature has also been shown to strongly influence device characteristics. The current, best performing device has been for a system in which the bilayer thickness is around 60 angstrom, approximately half of which is due to the PPV. From this system we have been able to achieve luminance levels greater than 1000 cd/m2 using an aluminum cathode and an ITO anode. Such high brightness levels from a PPV single slab device with an aluminum top electrode are quite unusual.

Paper Details

Date Published: 1 December 1997
PDF: 6 pages
Proc. SPIE 3148, Organic Light-Emitting Materials and Devices, (1 December 1997); doi: 10.1117/12.279322
Show Author Affiliations
Michael F. Durstock, Massachusetts Institute of Technology (United States)
Michael F. Rubner, Massachusetts Institute of Technology (United States)


Published in SPIE Proceedings Vol. 3148:
Organic Light-Emitting Materials and Devices
Zakya H. Kafafi, Editor(s)

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