Quantum efficiency is an important characteristic to check the optimal performance of a solar cell. Initially, the cell showed less output and quantum efficiency. Initially, the maximum quantum efficiency was 87% and then dropped very significantly. After all simulations and optimization, the cell performed far better than before. Figure , shows that the optimized cell has a quantum efficiency of 97.87% initially. The maximum quantum efficiency of the cell is 99.13% and retained the quantum efficiency up to 1000 nm wavelength. The quantum efficiency of the cell indicates the improvement of the cell.