Solar cells are considered photovoltaic devices regardless of the light wavelength they absorb. Electromagnetic energy in the visible spectrum, such as visible light, is detected by photodetectors (for example, infrared detectors). In distant areas of developing nations, tiny solar cells may power anything from household appliances to satellites, outdoor lighting, and even refrigeration for medicines. Evaluations of the proposed Sb2Se3-based solar cell technology have been conducted quantitatively and in terms of yield. Fluorine Doped Tin Oxide (FTO), zinc oxide (ZnO), cadmium telluride (CZTSe), and gold make up a solar cell based on Sb2Se3 (Au). The photovoltaic effect of the proposed Sb2Se3-based solar cell device on its Sb2Se3 layer is also explored (i.e., absorber layer). The research also discusses how the thickness of the absorber layer or the Sb2Se3 layer impacts the Performance of solar cells. The Performance of Sb2Se3-based solar cells with bulk Sb2Se3 defects has also been documented, and it has been demonstrated that the thickness of the absorber layer in Sb2Se3-based solar cell devices impacts the quantum efficiency of the suggested device. The proposed Sb2Se3-based solar cell's open-source voltage is 8.62mV, short circuit current is 2.47mA/cm2, fill factor is 656.9, and power conversion efficiency is 20.94%, it can be concluded.