New two-dimensional layered materials represented by graphene have the characteristics of high speed, low power consumption, adjustable energy band, flexibility, etc., and have broad application prospects in the fields of optoelectronic devices in the future. Among them, graphene has ultra-high carrier mobility and broadband optical absorption properties, and is an ideal material for optoelectronic devices, especially photodetection devices.
Recently, the Taizhou Graphene Research and Testing Platform has successfully developed a multi-functional optoelectronic testing project in response to the scientific research and application needs of graphene and other two-dimensional materials in optoelectronic devices. This test project combines the scanning imaging function of the Raman spectroscopy system, with the corresponding optical and electrical test accessories, can simultaneously obtain the Raman signal and photoelectric response of two-dimensional materials such as graphene, and can realize the scanning imaging function of Raman and photocurrent. (See below). Several research groups such as Southeast University, Nanjing University, and National University of Defense Technology have used this system to carry out optoelectronic performance tests and obtained ideal results.
After years of development, the Taizhou graphene research and testing platform has achieved the introduction and configuration of advanced equipment, the gathering and research of experts and scholars in the research and testing fields of high-tech materials (two-dimensional layered materials such as graphene, various nanomaterials, etc.). Accumulation of testing methods, and drafting of relevant national and industry standards. So far, the platform has provided a full range of testing services for nearly 100 customers to assist in research and R&D work.

(a) Graphene photoconductive photodetection device. (b) Raman imaging of graphene. (c) Electrical transport properties of graphene devices. (d) Photocurrent imaging of graphene devices. (e) Optical switching properties of graphene detectors. (f) Optical response as a function of incident optical power.