Two-dimensional (2D) transition metal dichalcogenides (TMDs) are pivotal building blocks for multifunctional composite architectures, offering tunable optoelectronic, catalytic, and mechanical responsiveness. Our work advances chemical vapor deposition (CVD) strategies to synthesize and integrate 2D TMDs and their heterostructures into multifunctional composites, optimizing their components and structures for next-generation sensors. We demonstrate low-temperature CVD protocols and thermally assisted tellurization processes to precisely tailor material morphology and interfacial properties, enabling fabrication of heterojunctions and pristine homojunctions for self-powered sensors and catalytic interfaces. By engineering defect states in TMDs monolayers, we achieve efficient single-photon emission for quantum-enhanced sensing. These studies underscore the role of 2D TMDs composites as versatile platforms for next-generation sensor systems, where tailored material hierarchies and responsive properties converge to meet the demands of interactive and multifunctional applications.
