Flexible image sensor array with bulk heterojunction organic photodiode Available to Purchase

Thick organic bulk heterojunction photodiodes with low dark current $<1nA∕cm2$ and efficient charge collection are reported. An electric field $>1V∕μm$ is sufficient to achieve $>75%$ charge collection in films of poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylene-vinylene] and [6,6]-phenyl-C61-butyric acid methyl ester blends up to $4μm$ thick, and the rate of photocurrent decay is reduced at saturation fields. The integration of a $4μm$ thick sensor layer onto a flexible amorphous silicon thin-film transistor backplane gave an image sensor array with 35% external quantum efficiency and noise equivalent power of $30pW∕cm2$ at reverse bias voltage of $−4V$⁠.