The beginning of this project coincided with growing MoS2 but focuses on the graphene synthesis by CVD on copper foil in large scale. The discussion below follows the process of started with the preparation of the substrate, transferring the graphene film, and characterization. Moving beyond optimizing the CVD process on various TMDs, growing both graphene and TMDs directly on top of each other for efficient device fabrication could open application for faster and thinner optoelectronics. This thesis consists of five chapters. This project presents experimental work, and the study and characterization results.