Application of 2D Polyoxometalate Clusterphene in a High‐Performance Photoelectrochemical Photodetector

Abstract Exploration of novel two–dimensional (2D) nanomaterials with desired properties using a controlled approach remains one of the major challenges ahead. Clusterphene, the newly emerged 2D formation of self‐assembled clusters, exhibits a comparable structure to graphene with intriguing physicochemical features, which are applied in several scientific disciplines. Herein, it is demonstrated that polyoxometalate clusterphene (POMCene) is a promising 2D nanomaterial for photoelectrochemical (PEC) photodetection. The photodetection performance of POMCene can be subtly tuned by adjusting external conditions like bias voltage, electrolyte, and incident wavelength. A photocurrent of 1.88 µA cm^‒2, a responsivity of 2.26 µA W^‒1, a detectivity of 5.65 × 10⁹ Jones, and a fast response speed of 0.02 s along with good long‐term stability can be achieved. It is believed that this research can pave a new direction for the future development of 2D POMCene in high‐performance optoelectronic devices.