▎ 摘　　要

In this paper, a surface plasmon resonance (SPR) sensor based on the hybrid structure of silver (Ag)-indium tin oxide (ITO)-graphene is proposed and investigated. SPR biosensors are subdivided into three kinds of structures Ag, Ag-graphene, and Ag-ITO-graphene, when carried out using their respective optimized structure parameters. According to our analysis and comparison, the ITO-assisted SPR biosensor has an optimal reflectivity of 3.587x10(-8) and a maximum phase sensitivity of 1.707x10(6)degrees/RIU, which shows that ITO can be employed to further enhance the SPR sensing performance even with the existence of graphene.