Preparation and Characterization of Nanostructured Inorganic Copper Zinc Tin Sulfide-Delafossite Nano/Micro Composite as a Novel Photodetector with High Efficiency

A novel photodetector, based on Cu2ZnSnS4, CZTS, is deposited Cu/CuFeO2 for wavelength and light power intensity detection. The preparation of CuFeO2 carried out by the direct combustion Cu foil wetted with Fe(NO3)2 solution. CZTS using hydrothermal method, then it dropped drop casting method at 70 °C. Various analyses are used to look chemical, morphological, optical aspects Cu/CuFeO2/CZTS, such as UV–vis, SEM, TEM, selected-area electron diffraction, XRD, in which all characteristic peaks confirmed prepared materials. Cu/CuFeO2/CZTS thin film’s SEM image has a homogeneous morphology, particles that around 350 nm size, demonstrating significant improvement morphology over film. TEM analysis verified nanostructured Cu/CuFeO2/CZTS. From XRD high generated indexed hexagonal (2H) kesterite crystal structures revealed compact highly material. analysis, Cu/CuFeO2, films recoded band gaps 1.49, 1.75, 1.23 eV, respectively. According gap measurements, absorption photodetector clearly increased. detectivity (D) responsivity (R) 1.7 × 1010 Jones 127 mAW?1, Moreover, external quantum efficiency (EQE) 41.5% 25 mW·cm?2 390 nm. Hence, very photoelectrical response, making promising broadband photodetector.