Sign in Subscribe
Technical institutes

Breakthrough in Organic Solar Cells: Researchers Develop High-Efficiency Ternary System

Strategic Insights

— 1 min read

Research conducted at Guangdong Polytechnic Normal University in Guangzhou, People's Republic of China, has made a significant breakthrough in the development of organic solar cells. By introducing a highly luminescent polymer donor, the team led by Lunbi Wu has successfully suppressed nonradiative recombination, resulting in a ternary system with a low voltage loss of 0.192 V and a high efficiency of 20.36%. This achievement is poised to significantly improve the efficiency of organic solar cells, which are a crucial component of renewable energy systems.

Key Takeaways:

  • The research focused on developing a highly luminescent polymer donor, PiNTSO-F, which was incorporated into a PM6:BTP-eC9-based system.
  • PiNTSO-F was found to locate at the donor-acceptor interface, optimizing the interfacial morphology, energetic landscape, and charge dynamics of the active layer.
  • The nonradiative recombination rate in the ternary system was significantly reduced, while the interfacial charge generation efficiency was simultaneously improved to nearly unity.
  • The device achieved a low nonradiative voltage loss of 0.192 V and a high efficiency of 20.36%.
  • The research demonstrates an effective strategy for suppressing nonradiative recombination through developing highly luminescent polymer donors as a third component.
  • The findings provide mechanistic insights that enable high-performance OSCs with minimized voltage loss.

Statistics:

  • The ternary devices achieved a high efficiency of 20.36%.
  • The nonradiative recombination rate in the ternary system was significantly reduced.
  • The interfacial charge generation efficiency was improved to nearly unity.
  • The device achieved a low nonradiative voltage loss of 0.192 V.
  • The research was conducted at Guangdong Polytechnic Normal University in Guangzhou, People's Republic of China.

Sources:

  • Research results published in Angewandte Chemie International Edition, 2025.
  • "Aggregation-Enhanced-Emission Polymer Donor Improves the Efficiency of Organic Solar Cells by Suppressing Nonradiative Recombination" by Lunbi Wu et al.
  • Contact information for Lunbi Wu, School of Optoelectronic Engineering, Guangdong Polytechnic Normal University, Guangzhou, 510665, People's Republic of China.
  • Publisher contact information for the journal Angewandte Chemie International Edition: Wiley-v C H Verlag Gmbh, Postfach 101161, 69451 Weinheim, Germany.

Read more