TCAD Simulation of Photodetector

TCAD Simulation of Four-Quadrant Photodetector using Silvaco Athena + Atlas

Description:
I am looking for an experienced semiconductor device simulation engineer to perform TCAD-based modeling and simulation of a four-quadrant photodetector (FQPD) using Silvaco Athena + Atlas.

Project Scope
Process Flow Modeling (Athena)
Build a complete semiconductor fabrication flow for the four-quadrant photodetector.
Optimize ion implantation parameters: dose, concentration, depth, etc.
Modify the default structure to n-substrate + p-sensitive surface with a common p-type structure.
Target inter-quadrant gap: gap is less than 100 μm
Device Simulation & Optimization (Atlas)

Output curves and data for:
Responsivity at 1064 nm
Dark current
Junction capacitance (1 MHz)
Cross-talk
Breakdown voltage
Response time
Analyze impact of intrinsic layer thickness on responsivity & response time.
Explore techniques to improve responsivity at 1064 nm:
Anti-reflective coating
Carrier concentration optimization
Carrier lifetime engineering
Cross-Talk Analysis
Investigate the effect of:
Carrier lifetime
Substrate doping concentration
Quadrant gap width
Reverse bias voltage
Isolation guard ring width
Junction depth
Distance to photosensitive region
Optimize design to minimize cross-talk.
Deliverables
Silvaco Athena process flow scripts
Silvaco Atlas simulation setup & files
Output plots & raw data files (.csv/.txt)
Short technical report summarizing results

Requirements
Expertise in Silvaco Athena + Atlas
Experience in photodiode or photodetector modeling
Familiarity with PIN structures and TCAD optoelectronic simulation
Prefer prior work with quadrant photodetectors or similar optoelectronic devices

Please complete the requirements described in the file: Requirements.docx

The following two files are provided as references:

Reference.pdf
(Page 53 of this file contains a process flow. I have a similar process based on that flow. Please check whether this file could be helpful for this task.)

Reference2.txt
(This file contains an approximate process flow, but the structure and dimensions are slightly different.)

Timeline: 14 - 20 days

Keywords:
Silvaco Athena, Atlas, photodetector, TCAD, four-quadrant, optoelectronics, PIN diode, responsivity, cross-talk, 1064nm