Fig. 1From: High Photon Absorptivity of Quantum Dot Infrared Photodetectors Achieved by the Surface Plasmon Effect of Metal Nanohole Arraya Structural model diagram of the typical quantum dot infrared photodetector. b Quantum dot distribution in the active regions with 5-period quantum dot composite layers. These composite layers are constituted by the A1GaAs barrier layer and the GaAs layersBack to article page