Fig. 1
From: Modelling and optimization of Ge/GaAs uni-travelling carrier photodiodes
Schematic view of the reported Ge/GaAs UTC-PD design. (a) A cross-sectional schematic view of Ge/GaAs UTC-PD which illustrates the thickness, doping level and material of each layer. (b) 3D schematic view of Ge/GaAs UTC-PD.
