Inkjet printing of a hydrogen-peroxide-based “ink” is used to oxidize conducting polymer thin films to produce patterned organic LEDs. Picoliter droplets of hydrogen peroxide oxidize the PEDOT film, rendering well- defined areas on the electrode non- electroluminescent. The figure shows a computer-generated image and the resulting patterned OLED.
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Yoshioka et al. (2006) studied this question.
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