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(Color online) MEH-PPV planar device consisting of 52 electrically floating Al strips. The interelectrode spacing between anode and cathode is . (a) Image of the device prior to turn-on at , . (b) Image of the fully turned on device taken in dark. (c) Close-up image showing light-emission from individual junctions. (d) Photovoltaic open circuit voltage vs number of junctions formed in MEH-PPV planar devices. All photovoltaic measurements were carried out under illumination from a blue/UV laser at .
(Color online) PF-co-MEH green-emitting planar device containing conductive ITO particles. The interelectrode spacing is . The device was turned on by applying a bias at . The image was taken in dark.
(Color online) Current-voltage (I-V) characteristics of green-emitting device doped with ITO particles. The device was turned on at by applying a bias and then cooled to to freeze out the ionic motion and stabilize the junction. Illuminated I-V curve was taken under illumination from a blue/UV laser.
(Color online) Green-emitting planar device with a single floating aluminum dot of in diameter. (a) Image of the device prior to application of bias, (b) after a bias of was applied at ; (c) after bias was applied; (d) image taken in dark at after bias was applied. Images in (a)–(c) were taken under UV illumination to illustrate the photoluminescence.
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