Ferroelectric materials can be used in optoelectronic applications that effectively separate photogenerated charge carriers (electrons and holes). The presence of an intrinsic electric field in these materials enhances the electron and hole separation, and the presence of ferroelectric domain walls leads to above bandgap photovoltages. In the past decade, however, halide perovskites have shown extraordinary photovoltaic performance due to their tunable materials/optoelectronic properties. Layered halide perovskites, in two-dimensional form, crystallizes in non-centrosymmetric space groups and show bulk ferroelectric polarization. This proposed work aims at developing a photoelectrochemical (PEC) water splitting system by combining the beneficial photovoltaic properties of halide perovskites with the ferroelectric polarization and garnering their synergic benefit in energy conversion. A correlation between the distortion, polarization and the excited-state lifetime will be developed. Finally, these materials will be employed in solar water splitting devices. The trend in the excited state lifetime to the observed photovoltage and the PEC performance will be studied and analyzed.