Issue 22, 2024

Quinoxaline-based Y-type acceptors for organic solar cells

Abstract

Minimizing energy loss plays a critical role in the quest for high-performance organic solar cells (OSCs). However, the origin of large energy loss in OCSs is complicated, involving the strong exciton binding energy of organic semiconductors, nonradiative charge-transfer state decay, defective molecular stacking network, and so on. The recently developed quinoxaline (Qx)-based acceptors have attracted extensive interest due to their low reorganization energy, high structural modification possibilities, and distinctive molecular packing modes, which contribute to reduced energy loss and superior charge generation/transport, thus improving the photovoltaic performance of OSCs. This perspective summarizes the design strategies of Qx-based acceptors (including small-molecule, giant dimeric and polymeric acceptors) and the resulting optoelectronic properties and device performance. In addition, the ternary strategy of introducing Qx-based acceptors as the third component to reduce energy loss is briefly discussed. Finally, some perspectives for the further exploration of Qx-based acceptors toward efficient, stable, and industry-compatible OSCs are proposed.

Graphical abstract: Quinoxaline-based Y-type acceptors for organic solar cells

Article information

Article type
Perspective
Submitted
03 3 2024
Accepted
06 5 2024
First published
07 5 2024
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2024,15, 8265-8279

Quinoxaline-based Y-type acceptors for organic solar cells

M. Xie, Z. Wei and K. Lu, Chem. Sci., 2024, 15, 8265 DOI: 10.1039/D4SC01481B

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