Perovskite Structure Pdf

Perovskite structure is a type of crystal structure with the general formula ABX3, where A is a cation, B is a smaller cation, and X is an anion. The structure consists of corner-sharing BX6 octahedra that form a three-dimensional network, with the A cations occupying the cuboctahedral sites within the network.

In the case of perovskite materials used in photovoltaic devices, the A cation is typically an organic or inorganic molecule, while the B cation is a metal such as lead (Pb), tin (Sn), or a combination of these metals. The anion X can be a halide such as iodide (I) or bromide (Br), or other small anions such as chloride (Cl) or cyanide (CN).

The perovskite structure has received significant attention in recent years due to its excellent optoelectronic properties, including high carrier mobility, long charge carrier lifetimes, and tunable bandgaps. However, issues related to stability, reproducibility, and toxicity have limited their commercialization.

To overcome these limitations, researchers are exploring alternative materials with perovskite-like structures, such as double perovskites and Ruddlesden-Popper phases, which offer improved stability and reduced toxicity. Overall, the perovskite structure represents a promising avenue for the development of next-generation photovoltaic materials.