Investigations on additive engineering and deposition methodology of light absorber layer for highly efficient and stable perovskite solar cells

Abstract

Perovskite Solar Cells (PSCs) have shown meteoritic increase in the power conversion efficiencies in a very short period since their invention. The optoelectronic perovskite compounds are generally defined by the ABX3 configuration, where A is an organic or inorganic cation, B is a metal cation and X is a halogen anion. The Power Conversion Efficiency (PCE) of the PSCs increased from 3.8% in 2009 to 25.7% in 2022. The easy tunability of the material properties by simply altering the composition in the perovskite compound laid the foundation for exploring a wide range of perovskite absorber materials for optoelectronic applications. Thus, the PSC technology evolved at a rapid pace and currently regarded as one of the potential and cost-effective solar cell technology. However, the PSCs have not been commercialized due to some critical disadvantages, such as their instability under ambient conditions. Additionally, highly efficient PSCs have been fabricated using either solution or vapor deposition processes under inert conditions inside a glovebox, which impose difficulties while fabricating large area devices on a commercial scale. Thus, the scope of this thesis is to newline