I am looking to include the value of conduction band density and valance band density of semiconductor material inside Silvaco code.
Dear Shradhya Singh,
in order to include (CB effective density of states (1/cm^3) and VB effective density of states (1/cm^3)) in your SILVACO code, you may have several choices.
One possible choices is provided as below:
Please look at this generic example (code to define new material with its parameters):
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material material=MoO3 user.default=zno user.group=semiconductor affinity=2.3 eg300=3.0 nc300=2.7e19 nv300=2.7e19 permi=18.0
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In this aforementioned example, we need to define MoO3 material and include its material parameters including affinity, band gap, ..., Conduction band density and Valence band density (nc300=2.7e19 nv300=2.7e19) in ATLAS SILVACO code. As such, according to the attached instruction PDF "Silvaco.pdf", we need to call key word "material material=MoO3"
and define its parameters for instance nc300=2.7e19 nv300=2.7e19 for Conduction and valence band density, respectively. Please refer to the attached PDF "Silvaco.pdf" to learn it from A to Z and more details.
Good luck with your work and your case study!
Sincerely yours,
Daniyal Khosh Maram
Shradhya Singh
The conduction band density and valance band density can be added in the silvaco code using the 'material' statement. The general silvaco code syntax is
=
nc300 and nv300 are the parameters for conduction band density and valance band density in the silvaco atlas. The nc300 and nv300 parameters can be added anywhere in the 'material' statement. An example of 'material' statement is as follows
material nc300=1e19 nv300=1e18 eg300=9 mun=20 mup=1.0e-6
where material=statement name
nc300, nv300, eg300, mun and mup are parameter names.
The 'material' statement has many parameters among which the necessary parameters should be added in the 'material' statement and the parameter values vary according to the material chosen.
For more details please refer to the CHAPTER 22 STATEMENTS of the silvaco user manual
Dear Shradhya Singh,
You need to define it with material parameters.
For Example :
material region=1 eg300=2.35 NC300=9.13e+17 NV300=7.81e+18 \ align=0.5 permittivity=11.39 epsinf=11.39 affinity=4.19 \ taun0=1e-9 taup0=2e-8 copt=1.5e-10
Check out the link below for a better understanding
https://silvaco.com/examples/tcad/section14/example5/index.html
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