Graphene-mediated wafer bonding to prepare monolayer-cored double heterostructures for high-performance nanooptoelectronics

We have fabricated for the first time a monolayer-cored double heterostructure, towards the realization of high-efficiency nanooptoelectronic devices. We prepared a Si/graphene/Si stack by means of graphene-mediated wafer bonding and verified the interfacial mechanical stability and interlayer electrical connection, demonstrating a new application of wafer bonding.