Designing Efficient Inverted Perovskite Solar Cells with Self-Assembled Monolayer Hole Transport Layers

Area of Science:

• Materials Science
• Photovoltaics
• Nanotechnology

Background:

• Self-assembled monolayers (SAMs) are versatile interfacial materials for perovskite solar cells (PSCs).
• SAMs offer tunable properties, favorable energy-level alignment, and reduced recombination losses.
• Inverted (p-i-n) PSC architectures benefit significantly from SAM-based hole-selective contacts.

Purpose of the Study:

• To review the evolution and applications of SAMs in p-i-n PSCs.
• To discuss fundamental aspects, preparation methods, and challenges of SAMs in PSCs.
• To summarize recent progress and future prospects of SAMs in inverted PSCs.

Main Methods:

• Literature review and synthesis of recent research on SAMs in PSCs.
• Analysis of SAMs' roles in energy-level modulation, interfacial modification, defect passivation, and charge transport.
• Discussion of common SAM preparation techniques and uniformity challenges.

Main Results:

• SAMs enable high power conversion efficiency, cost-effective fabrication, and scalability in p-i-n PSCs.
• SAMs are crucial for single-junction devices, tandem solar cells, and large-area modules.
• Key roles include energy-level tuning, interface optimization, defect healing, and charge transport enhancement.

Conclusions:

• SAMs are pivotal for advancing high-performance and stable inverted PSCs.
• Further research should focus on interfacial stability and long-term operational reliability.
• This review provides insights for developing next-generation SAM-based inverted PSCs.