Abstract
A simple, inexpensive method involving chemical deposition of silver metal onto a polymer layer by noncatalytic chemical reduction from silver nitrate solution is used in the fabrication of polymeric light-emitting diodes (LEDs). The method yielded silver films with good polymer/metal interfaces and the resulting LEDs emitted light uniformly over the entire device area, but the emission efficiencies were lower by an order of magnitude compared to LEDs with vacuum-deposited metal electrodes. The chemical deposition of the metal film was carried out on a lab bench in open air without any special precautions. In addition to its cost advantage over vacuum deposition methods, the chemical process may also allow fabrication of polymer LEDs on nonflat and/or large area substrates.
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