Decoding Buried Interfaces in Perovskite Solar Cells: Core Issues, Strategic Engineering, and Prospects for...

Area of Science:

• Materials Science
• Renewable Energy
• Photovoltaics

Background:

• Perovskite solar cells (PSCs) are promising photovoltaic technologies with high performance and scalability.
• However, their efficiency and long-term stability are hindered by interface-related issues, particularly at buried interfaces.

Purpose of the Study:

• To comprehensively review challenges at buried interfaces in PSCs.
• To analyze the impact of defects, strain, carrier dynamics, and chemical reactions on perovskite film quality and device performance.
• To propose targeted modification strategies for buried interfaces.

Main Methods:

• Review of existing literature on buried interfaces in PSCs.
• Focus on self-assembled monolayer (SAM)-based devices and textured interfaces in perovskite/silicon tandem solar cells.
• Analysis of challenges including defects, terminations, strain, carrier dynamics, and chemical reactions.

Main Results:

• Buried interfaces significantly impact perovskite film quality and device performance.
• Key challenges include defects, strain, unfavorable carrier dynamics, and adverse chemical reactions.
• Self-assembled monolayers and textured interfaces are crucial areas of focus.

Conclusions:

• Optimizing buried interfaces is critical for enhancing PSC efficiency and stability.
• Proposed strategies include defect passivation, strain control, carrier transport modulation, and reaction inhibition.
• Future research should explore advanced in situ characterizations, novel charge transport materials, and innovative interface engineering.