Graphene composites based photodetectors

Abstract

Graphene is an amazing material with unique electrical and optical properties that have never been observed in conventional materials. Graphene can absorb light from ultraviolet to infrared and transit carriers at a speed of 1/300 of light, which make graphene an excellent candidate for optoelectronic applications. Graphene composites consisting of graphene and other materials combine the high carrier mobility property of graphene and the excellent light absorption properties of other semiconductors, which are ideal for development of next-generation optoelectronic devices, especially photodetectors. In this chapter, we review the recent progress of graphene composite photodetectors with significant performance improvement compared to the original graphene photodetectors and discuss its future developments. We consider that graphene composite photodetectors would play an important role in future optical interconnect and imaging systems.