Thickness-dependent photoresponse of P3HT:PCBM organic photodiode fabricated by drop-casting method
2021
In this article, P3HT:PCBM organic photodetectors with micrometer level thickness active layer are fabricated by drop casting method. It is found that while the dark current of these detectors are all ~10 nA cm-2, the photoresponse of these OPD decreases with thickness. When the active layer thickness is ~2 μm, a responsivity as high as 0.86 A/W is achieved when biased at -3V, resulting a directivity up to 1013 Jones.
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