I want to know the exact steps for extracting EBD at various biasing of gate/source/drain.
You can add con.band, val.band, and band.param in output statement in code. These quantities will be stored in the structure file generated by tcad at the last bias point. Then you can plot the quantity say conduction band energy and take a cutline to obtain the conduction band profile. same step can be followed to plot the valence band energy profile. Then you can plot both data in a single graph to obtain a band diagram. I don't know about any other dedicated command if available for plotting of EB diagram directly.
you can use "con.band" and "val.band" commands in this way :
output con.band val.band
and then draw a cutline in your structure to see the enegry band diragrams.
you should use these commands after the "method" statement and before the "solve init" statement
Hi Iman and Subir,
I tired to follow the same steps i.e. output con.band val.band and then used the cutline to plot the band diagram, but the plot i get is of the doping concentration how i can get the band diagram properly. can you guys help me in that. Thanks Iman Chahardah Cherik Subir Maity
Muhammad Ishfaq you have to choose con.band and val.band instead of doping concentration
Iman Chahardah Cherik thank you for the kind response. I have followed the step you mentioned but i can not find the conduction band and valance band in the plot i have attached the file
step 1
I write output = con.band val.band
step 2
from the tony plot i draw a vertical line from the cutline option to see the band diagram as i mention before that it give doping concentration
step 3
the plot i got using cutline option where i want to change it to conduction band and valance band but i can not find the option for that.
I have attached the file for good understanding can you look into this .
Looking forward to your kind response
Muhammad Ishfaq : After completion of the simulation, when Tonyplot will plot the .str file, by default it will show a surface plot of doping concentration. Right-click on the plot, select contour, then select conduction band energy to get a plot of conduction band 1st. then go to Tool-> cutline and take a vertical cutline to see the 1-D profile of conduction band energy. Repeat the same for valence band energy.
* As I can see in pdf, you have mentioned "SAVE OUTF=...." just after SOLVE INIT statement. t will give the band diagram at zero bias condition only. Save the structure file after completion of the simulation. Otherwise, the effect of bias voltage on conduction and valence band energy will not be captured.
Subir Maity Iman Chahardah Cherik Thank you so much both of you i am able to solve the problem.
Subir Maity your recommendation worked i included the "save outf = ....." command in the bias voltage condition. after that i run the simulation and got the .str file. when tony plot displayed the .str file then i selected the contour and from the tool i use the cutline command to analyze the conduction band in 1 D profile.
Dear
There are some videos (https://www.youtube.com/watch?v=ZXDVfZrzsmg) in order to learn Atlas TCAD.
Thanks.
Hi Dr Amit Das . I agree with
Dr Subir Maity and
Dr Iman Chahardah Cherik .
Wish you the best always.
- Badges
- Science topic
- Similar topics
- Phytochemistry
- Extracts