Nanocomposite Based Organic–Inorganic Cu₃BiS₃ High Sensitive Hybrid Photonic Devices

We report the synthesis and application Cu₃BiS₃ nanorods in infrared photodectection. Cu₃BiS₃ nano rods were characterized structurally, optically and electrically. The detailed IR photodectection properties in terms of photo response were demonstrated with IR lamp and 1064 nm laser illuminations. The rapid photocurrent time constants followed by the slower components, resulting due to the defect states. The photo detecting properties for different concentrations of nanorods blended with the conjugate polymer devices were demonstrated. Further the photocurrent was enhanced to threefold increase from 3.47×10⁻⁷ A to 2.37×10⁻³ A at 1 V for 10 mg nanorods embedded in the polymer device. Responsivity of hybrid device was enhanced from 0.0158 A/W to 102 A/W. The detailed trap assisted space charge transport properties were studied considering the different regimes. Hence Cu₃BiS₃ can be a promising candidate in the nano switchable near IR photodetectors.