The Light Wavelength, Intensity, and Biasing Voltage Dependency of the Dark and Photocurrent Densities of a Solution-Processed P3HT:PC₆₁BM Photodetector for Sensing Applications.

A decreasing trend in the on/off ratio is observed when the source-to-detector distance (l) (D3 > D1 > D4) is increased.

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The OPD photocurrent density exhibited a magnitude up to 2.5–3 orders higher compared to the dark current density at a −1 V bias while it increased by up to 3–4 orders at zero bias conditions for red, green, and blue lights, showing an increasing trend when a higher voltage is applied in the negative direction.

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