Abstract
In the rapidly evolving field of organic solar cells (OSCs), the charge transfer (CT) process at the photoactive layer interface is pivotal for device performance. This article focuses on recent progress of Z‐type CT pathway, an unconventional process in OSCs that differs significantly from traditional donor–acceptor systems. The Z‐type process shows the potential for high open‐circuit voltage devices. Herein, some applications in solar cells that are inspired by the Z‐scheme in natural photosynthesis are first introduced. Subsequently, studies on mechanisms of charge generation and transfer in bilayer OSCs with Z‐type characteristics are presented. In analogy to the devices in OSCs, other types of optoelectronic devices with similar electron transfer pathways are discussed. Lastly, challenges and potential opportunities are addressed, and the need for further research to harness the potential of Z‐type devices in OSCs is emphasized.
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