Simulating 3D Sensors on RD53B chip

Development
1

Hello everyone,

I am currently working on simulating 3D pixel sensors in Allpix Squared, specifically for use with the 3D53B chip.My goal is to make a realistic simulation of a 3D pixel sensor, and i am wondering if it is as simple as defining two implants as shown in this picture, or do i need to add more implants?

image
image746×762 50 KB

This is the model configuration i am currently using for RD53B (without any implants):

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SPDX-FileCopyrightText: 2021-2024 CERN and the Allpix Squared authors

SPDX-License-Identifier: MIT

type = “hybrid”
geometry = “pixel”
number_of_pixels = 400 384 #
pixel_size = 50um 50um

sensor_thickness = 150um
sensor_excess_top = 0.0mm
sensor_excess_bottom = 0.0mm
sensor_excess_right = 0.0um #0.6
sensor_excess_left = 0.0um #0.6

bump_sphere_radius = 9.0um
bump_cylinder_radius = 7.0um
bump_height = 20.0um
bump_offset = 0.0um 0.0um

chip_thickness = 400um
######################

Any help is appreciated!

2

Hi @pofstad ,

You’re on the right track for sure!
How many electrodes you need really depend on your sensor however, so it’s difficult to give a general answer.
Most commonly you would have one frontside implant (that is connected to your front-end electronics chip) and several backside implants. However, the details of their number and positioning is particular to the sensor you want to simulate.
If you have an electric field model or a field from TCAD or so you can figure it out from that

Sorry I can’t be of more help than this!

Kind regards,
Håkan