The most effective way to boost electrochem. efficiency is to design nanostructures that fully exploit the advantages of all metals and create an interfacial impact between structures. In this study, di-Et dithiocarbamate compound is used to produce an elongated with flowery flakes In:SnO2/La3InS6 structure. The morphol., crystalline, and opto-elec. properties of the substance were examined According to UV-visible anal., the direct optical band gap was 4.2 eV. The core level of La3d, In3d and S2p was revealed by XPS. Elec. testing of a photoelectrochem. cell′s transparent photoactive electrode revealed an extraordinary specific capacity of 603 F g-1 at 5 mV s-1 when illuminated. The photoelectrode′s brief chronoamperometric response showed the creation of 19.8 mA of photocurrent. In the presence of light, higher photocurrent densities were obtained at each scan rate, demonstrating that exposure to light enhanced the performance of the electrode. A helpful photoelectrode that may be applied to renewable energy systems is unquestionably introduced by this work.