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Messages - chitrapandy

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Questions and Answers / Re: error
« on: June 17, 2021, 03:20 »
Ok, I understand.
THnk you for the suggestion.

Questions and Answers / Electrostatic Doping
« on: June 14, 2021, 03:46 »
I have generated the p+n+ diode structure with i-layer and  the doping in the n+ and p+ region with doping concentration of 2×10+20 /cm3.
The doping is considered as electrostatic doping like extra charge is added on atom .
My question is how it consistent with the normal doping( using conventional dopants like P & B)?
Is this kind of doping really forms depletion region like conventional dopant ?
Can anyone give the clarity on this?
Thank you

Questions and Answers / error
« on: June 14, 2021, 03:33 »

I have calculated Id-Vg for my transistor structure. At the first time I have viewed the IdVg using IV characteristics analyzer but now below error is shown

Traceback (most recent call last):
  File "", line 1573, in <module>
  File "zipdir\NL\Study\", line 1889, in __init__
  File "zipdir\NL\Study\", line 532, in _saveState
  File "zipdir\NL\Study\", line 517, in _saveToFile
  File "zipdir\NL\IO\", line 471, in nlsave
  File "zipdir\NL\IO\", line 279, in __delitem__
  File "h5py\_objects.pyx", line 54, in h5py._objects.with_phil.wrapper
  File "h5py\_objects.pyx", line 55, in h5py._objects.with_phil.wrapper
  File "build\lib\site-packages\h5py-2.7.1-py3.6-win-amd64.egg\h5py\_hl\", line 496, in __getitem__
  File "h5py\_objects.pyx", line 54, in h5py._objects.with_phil.wrapper
  File "h5py\_objects.pyx", line 55, in h5py._objects.with_phil.wrapper
  File "h5py\h5d.pyx", line 181, in
  File "h5py\_proxy.pyx", line 158, in h5py._proxy.dset_rw
  File "h5py\_proxy.pyx", line 84, in h5py._proxy.H5PY_H5Dread
OSError: Can't read data (bad global heap collection signature)

How to rectify this error? Help me to solve this issue.
Thank you

Questions and Answers / Re: error in IdVg Calculation
« on: June 22, 2020, 02:47 »

Thank you for the clarification.


Questions and Answers / error in IdVg Calculation
« on: June 12, 2020, 10:30 »

While calculating IdVg I got this error.
Please help me to understand and solve this error.
Calculating Eigenvalues    : ==================================================

** Back Engine Exception: More electrons than states to distribute them over.
** Location of Exception : occupationutilities.cpp:443

I have attached the py script and error log file for the reference.
Thank you

Questions and Answers / Re: OptimizationDevice Geometry
« on: January 9, 2020, 05:31 »
when I run using the LCAO calculator for optimization i am getting the below warning

# The computed multigrid residual is greater than the required accuracy. #
# Computed residual :   4.44756e-10   #
# Required accuracy :   1.00000e-12   #

I don't understand what is the significance  can anyone pls tell about this warning?

Thank you

Questions and Answers / Re: OptimizationDevice Geometry
« on: January 7, 2020, 08:17 »
ok. I will try other calculators.
Thank you for your suggestion.

Questions and Answers / OptimizationDevice Geometry
« on: January 6, 2020, 05:11 »

I have created SiNWFET device geometry which is doped with single Phosphorus , Single Boron atom  in its central region and I try to optimize this using optimizeDeviceGeometry study object.
 Following error occurred during the optimization. Please help to rectify this error.
I have attached the device geometry python script and log file.

I used the restart configuration which is provided in the manual but still unable to run the script ended with the error in the restart_configuration. attached the log file and script.

I checked nearly most of the tutorials talking abt this restart method usage examples. Still I dont understand why this error occured. Unable to solve to solve this error for long time.

Can anyone please help to rectify this error.

Thanks in advance.

Thank you


I have already attached my python script file.
Here I have created a GAA device structure using SiNW.
Trying to simulate the Id Vd curve for zero bias condition for varying Vd from 0 to 1V using IV characteristics study object.
Pls find the log file attached.


I am trying to calculate IdVd characteristics  and ended with this error.
I used this tutorial as reference and try to rectify the error message to call update () first.
Still I am getting the same error.

Please suggest the solution for this error.

Traceback (most recent call last):
  File "zipdir\NL\GUI\MainWindow\LabFloor\", line 333, in load
  File "C:\Program Files\QuantumATK\QuantumATK-P-2019.03-SP1\Lib\site-packages\AddOns\ATKDataReader\", line 363, in load
  File "zipdir\NL\Study\", line 430, in _readHeavyweightData
  File "zipdir\NL\IO\", line 853, in nlread
  File "zipdir\NL\IO\", line 544, in readHDF5
  File "zipdir\NL\IO\", line 644, in readHDF5Group
  File "zipdir\NL\IO\", line 338, in _fromVersionedData
  File "zipdir\NL\IO\", line 436, in __initFromVersionedData
  File "zipdir\NL\Study\", line 1870, in __finalizeObject
  File "zipdir\NL\Study\", line 554, in _refreshDataCache
  File "zipdir\NL\Study\", line 195, in add
  File "zipdir\NL\Study\", line 220, in _process
  File "zipdir\NL\Calculators\Interfaces\", line 94, in isConverged
  File "zipdir\NL\Calculators\Interfaces\", line 155, in _convergenceInformation
NL.ComputerScienceUtilities.Exceptions.NLError: No convergence information available. Call "update()" first.

Thank you

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