Enhancing 2D GeS for electrophotonic applications through organometallic molecule intercalation.

The novel properties of 2D-based materials are exemplified by exotic features of group IV monochalcogenides, of which GeS is a prototypical example. To optimize device integration, functionalization of the properties of 2D materials is crucial. Electrochemical intercalation offers an efficient strategy to both tune and control the properties of the materials. While current intercalation methods commonly utilize intercalants like Li, we present a novel design using atomically thin GeS intercalated with organometallic molecules, specifically ferrocene and chromocene. Leveraging advanced first-principles techniques, we realize enhanced optoelectronic characteristics ideal for advanced GeS devices. Our findings reveal a new approach to tuning the optoelectronic properties of layered structures for high-performance electronic and photonic applications.