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Solution-processed conjugated polymer organic light-emitting diodes with high built-in potential by solution- and solid-state doping
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Polymer homojunction light-emitting diodes(LEDs) comprising -doped poly(dioctylfluorene-alt-benzothiadiazole) (F8BT) hole-injection, intrinsic F8BT emitter, and -doped F8BT electron-injection layers have been demonstrated. A thin F8BT film was photocrosslinked and bulk -doped by nitronium oxidation, then overcoated with an F8BT layer which was then surface -doped by contact printing with naphthalenide on an elastomeric stamp. These LEDs exhibit high built-in potential , efficient bipolar injection, and greatly improved external electroluminescence efficiency compared to control devices without the structure. A modulated photocurrent technique was used to measure this , which systematically improves with diodestructure.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Solution-processed conjugated polymer organic p-i-n light-emitting diodes with high built-in potential by solution- and solid-state doping