Since its discovery, graphene has attracted widespread interest as a two-dimensional material composed of carbon atoms. It has a unique lattice structure and excellent properties, including high electrical conductivity, excellent carrier mobility, outstanding optoelectronic properties, excellent mechanical properties, chemical stability, and thermal conductivity. This makes graphene a great potential in the field of electrical and electronic devices. Graphene can be used in high-speed electronic devices, high-performance transistors, flexible displays, solar cells, photo detectors, and light s...