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Science 10 March 1995:
Vol. 267. no. 5203, pp. 1479 - 1481
DOI: 10.1126/science.267.5203.1479
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Articles

Micrometer- and Nanometer-Sized Polymeric Light-Emitting Diodes

Magnus Granström 1, Magnus Berggren 1, and Olle Inganäs 1

1 Laboratory of Applied Physics, Department of Physics and Measurement Technology, Linköping University, S-581 83 Linköping, Sweden

A method for the fabrication of micrometer-and submicrometer-sized polymeric light-emitting diodes is presented. Such diodes have a variety of applications. Light sources of dimensions around 100 nanometers are required for subwavelength, near-field optical microscopy. Another possible application is patterning on the micrometer and nanometer scale. The diodes have been made in the form of a sandwich structure, with the conductive polymer poly(3,4-ethylene-dioxythiophene) polymerized in the pores of commercially available microfiltration membranes defining the hole-injecting contacts, poly[3-(4-octylphenyl)-2,2;-bithiophene] as the light-emitting layer, and a thin film of calcium-aluminum as the electron injector.

Submitted on September 20, 1994
Accepted on December 19, 1994


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