Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 131, Issue 51, Pages 18236-+Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja908962b
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- Natural Sciences and Engineering Research Council (NSERC) of Canada
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What will happen if one brings two metallic probes into direct contact with a polymer film and apply a voltage bias? We demonstrate that, for a mixed ionic/electronic conductor containing a luminescent conjugated polymer and a polymer electrolyte, it is possible to induce strong in situ electrochemical doping of the luminescent polymer and form a dynamic light-emitting p-n junction. Using time-lapse fluorescence imaging, we have visualized p- and n-doping of various shapes and shades, p-n junction electroluminescence, and the effects of voltage reversal, The direct probing technique offers great simplicity and versatility for studying luminescent mixed ionic/electronic conductors.
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