Fig. 1
High-density curved image sensor array based on the MoS2-graphene heterostructure. a Schematic illustration of the high-density CurvIS array based on the MoS2-graphene heterostructure. b Optical camera image of the high-density CurvIS array. Inset shows the image (i.e., university logo) captured by the CurvIS array. c Schematic illustration of the device design. Inset shows an optical microscope image of a single phototransistor. d Cross-sectional transmission electron microscope image of the MoS2-graphene phototransistor (left) and the magnified image of the MoS2-graphene heterostructure (right). e Optical (left) and magnified scanning electron microscope (right) image of the high-density CurvIS array on the concave hemisphere
