Figure 2From: Photovoltaic Ge/Si quantum dot detectors operating in the mid-wave atmospheric window (3 to 5 μ m)Responsivity spectra under different applied bias of QDIP with the bottom position of the delta-doping plane. The distance between the QD layer and the doping plane is 5 nm; the sheet hole density pB = 8 × 1011cm−2. The sample temperature is 90 K.Back to article page