A Solar‐Blind UV Detector Based on Graphene‐Microcrystalline Diamond Heterojunctions

An ultraviolet detector is demonstrated through a whole‐wafer, thin diamond film transfer process to realize the heterojunction between graphene and microcrystalline diamond (MCD). Conventional direct transfer processes fail to deposit graphene onto the top surface of the MCD film. However, it is found that the 2 µm thick MCD diamond film can be easily peeled off from the growth silicon substrate to expose its smooth backside for the graphene...