Zinc oxide and dye are utilized to absorb and convert incident photons to electric energy using a sandwich construction with an active area of 1.5 × 1.5 cm2, which improves the photodetector’s performance as a light sensor. A variable variation of solution concentration according to the ratio of mass and volume was used to extract natural dye from Barago officinalis. The Barago officinalis absorbance was investigated by spectrophotometer at a wavelength of 200–1000 nm. This indicates that UV absorption has occurred, and note that when an increase in the spectral response at concentration of 1, there appears an improvement in the infrared region with a wave length of 950 nm and the enhanced sensitivity in the long wavelength region could be attributed to formation of dye aggregates within the devices which led to the highest value of qualitative detection up to 1.3 × 10[Formula: see text] W[Formula: see text] cm Hz[Formula: see text] thus increasing quantum efficiency to (119)% at the wavelength (950 nm).

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