As a new type of thin film solar cells, organic and inorganic hybrid perovskite solar cells (PSCs) have rapidly developed since the first PSCs were fabricated by Mayasaka, and the power conversion efficiency is improved from 3% to 22.1%. As light-harvesting materials, the perovskites show excellent photovoltaic performances, such as high absorption coefficient, high carrier mobility, long carrier diffusion lifetime and direct band gap. Nevertheless, the perovskite materials have shown limited effective lifetimes because the perovskite materials are sensitive to water and oxygen. As demonstrated in previous reports, functional additives can adjust structure of perovskite crystal, progress of crystallization or defect of crystal, which can improve the photovoltaic performances or long-term stability of PSCs. The application of functional additives in PSCs is reviewed in detail and predicted.
Contents
1 Introduction
2 Application of functional additives in perovskite solar cells
2.1 Inorganic additives
2.2 Organic additives
3 Conclusion