Development of Perylene-Based Non-Fullerene Acceptors through Bay-Functionalization Strategy

Area of Science:

• Materials Science
• Organic Electronics
• Photovoltaics

Background:

• Perylene derivatives have significantly impacted molecular semiconductor research.
• Perylene diimide (PDI) is a promising class of organic materials for organic photovoltaic (OPV) applications.
• PDIs offer enhanced photo- and thermal stability and high electron affinity, enabling band-like transport.

Purpose of the Study:

• To review representative achievements in rationally designed PDI systems.
• To highlight synthetic methodologies for PDI derivatives, particularly bay-functionalization strategies.
• To elucidate the structure-performance relationship of perylene-based small molecular acceptors (SMAs) in photovoltaics.

Main Methods:

• Review of synthetic strategies for perylene diimide derivatives.
• Analysis of bay-functionalization techniques for molecular nanostructure design.
• Correlation of molecular structure with photovoltaic performance outcomes.

Main Results:

• Demonstration of well-designed PDI systems through strategic synthesis.
• Advancement in creating molecular nanostructures using bay-functionalization.
• Establishment of structure-performance relationships for PDI-based SMAs.

Conclusions:

• Rationally designed PDI systems are crucial for advancing organic photovoltaics.
• Bay-functionalization strategies enable the creation of high-performance PDI materials.
• Understanding structure-performance relationships is key to optimizing PDI-based solar cells.