Abstract:A comprehensive study on photoconductive gain in organic bulk heterojunction (OBHJ) materials is reported. High photoconductive gains in OBHJs occur in operating regions where the device characteristics are dominated by photomodulated contact injection effects. The photomodulated injection current contributes to the total device current by augmenting the photocurrent resulting from photoabsorption in the device. An experimentally confirmed simulation of bulk photoconduction in lateral P3HT:PC 71 BM bulk hetero… Show more
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