The following is a TCAD simulation of a high speed UTC photodetector. An I-V curve is simulated for the photodetector, forward and reverse. A light beam is simulated to enter the photodetector. The photo-current response to a light impulse is simulated, followed by a frequency response in TCAD.
Beam Simulation Entering Photodetector:
Frequency Response in ATLAS:
The full project (pdf) is here: ece530_final_mbenker
The following project uses Silvaco TCAD semiconductor software to build and plot the I-V curve of a waveguide UTC photodetector. The design specifications including material layers are outlined below.
The structure is shown below:
Forward Bias Curve:
Negative Bias Curve:
Current Density Plot:
Acceptor and Donor Concentration Plot:
Bandgap, Conduction Band and Valence Band Plots:
Construct an Atlas model for a waveguide UTC photodetector. The P contact is on top of layer R5, and N contact is on layer 16. The PIN diode’s ridge width is 3 microns. Please find: The IV curve of the photodetector (both reverse biased and forward bias).
The material layers and ATLAS code is shown in the following PDF: ece530proj1_mbenker