  Recent observations indicated that the photoelectric conversion properties of
perovskite materials are intimately related to the presence of superlattice
structures and other unusual nanoscale features in them. The low dimensional or
mixed dimensional halide perovskite family are found to be more efficient
materials for device application compared to 3-dimensional halide perovskites.
The emergence of perovskite solar cell has revolutionized the solar cell
industry because of their flexible architecture and rapidly increased
efficiency. Tuning the dielectric constant, charge separation are the main
objective in designing a photovoltaic device that can be explored using
2-dimensional perovskite family. Thus, revisiting the fundamental properties of
perovskite crystals could reveal further possibilities for recognizing these
improvements towards device functionality. In this context, this review
discusses the material properties of 2-dimensional halide perovskite and
related optoelectronic devices aiming particularly for solar cell application.
