Photodetecting and light-emitting devices based on two-dimensional materials

Yu Yuanfang¹, Miao Feng^{2, ‡}, He Jun^{3, §}, Ni Zhenhua^{1, †}

(color online) (a) The ultraviolet-visible-infrared light absorbance of graphene and SWCNT/graphene hybrid film on quartz (top). Responsivities of SWCNT/graphene photodetector as a function of the optical power at different illumination wavelengths (bottom).^[50] (b) Schematic of the Bi₂Te₃/graphene hybrid device (top). Photocurrent as a function of wavelength (bottom). Illustration of band structure and charge transfer (inset).^[31]