Surface Passivation Using 2D Perovskites toward Efficient and Stable Perovskite Solar Cells

Area of Science:

• Materials Science
• Renewable Energy
• Photovoltaics

Background:

• 3D perovskite solar cells (PSCs) show promise but suffer from surface defects and degradation.
• 2D perovskites offer enhanced robustness due to their protective organic layers.
• Combining 2D and 3D perovskites creates heterostructures for improved performance.

Purpose of the Study:

• To comprehensively review recent progress in 2D/3D heterostructure PSCs.
• To discuss surface passivation strategies using 2D perovskites.
• To analyze the impact on optoelectronic properties, stability, and photovoltaic performance.

Main Methods:

• Literature review of 2D/3D heterostructure perovskite solar cells.
• Systematic discussion of surface passivation techniques.
• Analysis of crystal structures, advantages, and performance metrics.

Main Results:

• 2D perovskite surface passivation effectively reduces defects and recombination in 3D PSCs.
• 2D/3D heterostructures demonstrate improved thermal, moisture, and light stability.
• Enhanced optoelectronic properties lead to higher photovoltaic efficiency.

Conclusions:

• Surface passivation with 2D perovskites is a key strategy for advancing 3D PSC technology.
• 2D/3D heterostructures offer a promising pathway for efficient and stable next-generation solar cells.
• Further research into passivation techniques can unlock improved photovoltaic performance.