Process in π-Conjugated Self-Assembled Monolayers for Inverted Perovskite Solar Cells

Area of Science:

• Materials Science
• Renewable Energy

Background:

• Self-assembled monolayers (SAMs) are crucial hole-selective contacts in inverted perovskite solar cells (PSCs).
• Their ultrathin structure presents challenges like instability and desorption due to weak intermolecular forces.
• π-conjugated SAMs offer enhanced rigidity and interactions, improving molecular packing and interfacial properties.

Purpose of the Study:

• To systematically review and categorize π-conjugated SAMs for inverted PSCs.
• To highlight advancements in π-conjugated SAM design for improved device performance.
• To provide guidance for developing novel π-conjugated SAMs for efficient and stable PSCs.

Main Methods:

• Literature review and systematic categorization of π-conjugated SAMs.
• Analysis of SAM structural components, derivative moieties, and functional mechanisms.
• Highlighting representative studies and their contributions.

Main Results:

• π-conjugated SAMs effectively address SAM instability and agglomeration issues in PSCs.
• Enhanced molecular rigidity and intermolecular interactions lead to ideal molecular packing.
• Improved interfacial properties contribute to better device performance and stability.

Conclusions:

• π-conjugated SAMs are a dominant and promising strategy for advanced PSCs.
• Understanding the structure-property-performance relationship is key for future SAM design.
• This review provides a framework for designing next-generation π-conjugated SAMs for efficient and stable inverted PSCs.