Photomultiplication (PM) type organic photodetectors (OPDs) are presented that can work well under forward and reverse bias and exhibit tunable spectral response under bi-directional bias. The working mechanism of the PM type OPDs is attributed to the interfacial trap-assisted hole tunneling injection from external circuit under light illumination. Photogenerated electron distribution in active layers is calculated based on transfer matrix method.
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Miao et al. (2016) studied this question.
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