Improving the Stability of Perovskite Solar Cells:
Recent Developments and Future Prospects

Lead halide perovskite nanocrystal (PNC) materials have garnered much attention lately because of their fascinating optical and optoelectronic characteristics. These characteristics make them excellent candidates for photovoltaic applications with high power conversion efficiencies for solar cell applications. However, degradation during thermal treatment and poor stability against moisture and UV light are common problems for PNCs. Hence, for this technology to be deployed on a large scale, efficiency must be combined with long-term durability, which means there is a need to improve the stability of PNC materials to enhance their applicability. To meet this challenge, techniques to increase stability, like adjusting the perovskite's composition, adding hydrophobic coatings, exchanging metal electrodes for carbon or transparent conducting oxides, and packaging, have been investigated and employed. Furthermore, moisture and oxygen are known to be some of the most pervasive external factors that lead to the degradation of PNCs. This seminar, therefore, focuses on how polymeric materials have been used as hydrophobic protection against environmental moisture while simultaneously maintaining or improving the principal properties of PNCs. 

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