Fuller-Rylenes: Paving the Way for Promising Acceptors

Area of Science:

• Materials Science
• Organic Electronics
• Photovoltaics

Background:

• Hybridization of acceptors is key to improving photovoltaic device performance.
• Fullerene derivatives like PC61BM are common acceptors but have limitations.
• Exploring new acceptor materials is crucial for advancing solar cell technology.

Purpose of the Study:

• To synthesize and characterize novel fuller-rylene hybrids as potential acceptors.
• To investigate the impact of structural modifications on acceptor properties.
• To enhance power conversion efficiency in organic photovoltaic devices.

Main Methods:

• A straightforward one-pot Pd-catalyzed cyclization was employed for synthesis.
• Structural variations were achieved by installing R1 and R2 groups on the perylene core.
• Performance was evaluated by fabricating photovoltaic devices and measuring power conversion efficiency.

Main Results:

• The synthesized fuller-rylenes exhibited enhanced absorption in the visible region.
• Bay-decorated fuller-rylene S-Fuller-PMI achieved a power conversion efficiency of 8.01%.
• S-Fuller-PMI outperformed the benchmark acceptor PC61BM (7.09% efficiency).

Conclusions:

• Fuller-rylene hybrids offer a promising new class of acceptors for photovoltaic applications.
• The developed synthetic strategy allows for tunable electronic and structural properties.
• These novel acceptors present a viable alternative to PC61BM for high-efficiency solar cells.