Two dimensional perovskites

Perovskite materials have attracted tremendous attention in the field of material science and technology owing to their unique properties like tunable band gap, high carrier mobility, long diffusion length and high molar absorptivity coefficient. Among 2D perovskites the layered materials have been extensively studied in comparison to non-layered 2D perovskites. But non layered perovskites have emerged as a class of potential materials possessing unique structure and optoelectronic properties which make them suitable for many applications. This chapter will focus on the comprehensive review of synthesis, structure, properties and applications of non-layered 2D perovskites. We will discuss the crystal structure of these materials in comparison to their layered counterparts, followed by an insight of their physical properties and finally their applications. Overall, this chapter will provide insights into the potential of non-layered 2D perovskites as an emerging class of materials.