Defects and Defect Passivation in Perovskite Solar Cells.

Area of Science:

• Materials Science
• Renewable Energy
• Photovoltaics

Background:

• Perovskite solar cells show promise but face challenges in efficiency and long-term stability.
• Material defects significantly impact perovskite film quality and device performance.
• Defect passivation using additives is a key strategy for enhancement.

Purpose of the Study:

• To review common defects in perovskite materials and their impact on solar cell performance.
• To discuss various additives, including ionic compounds, organic molecules, and polymers, used for defect passivation.
• To provide insights for developing advanced additives for improved perovskite solar cell technology.

Main Methods:

• Literature review of perovskite material defects and their influence.
• Analysis of different additive categories and their passivation mechanisms.
• Discussion on the role of additives in enhancing photoelectric conversion efficiency and stability.

Main Results:

• Identified key defect types in perovskite materials and their detrimental effects.
• Cataloged various additives (ionic compounds, organic molecules, polymers) for defect passivation.
• Highlighted the effectiveness of additives in mitigating performance limitations.

Conclusions:

• Defect passivation is crucial for advancing perovskite solar cell technology.
• A diverse range of additives offers potential for improving efficiency and stability.
• Further research into sustainable additives will drive future solar cell development.