I have used following commands to overcome convergence problems,
"
#----------------------------------------
# Iteration Control Settings
#----------------------------------------
left_electrode_iteration_control_parameters = IterationControlParameters(
damping_factor=0.5,
max_steps=120,
tolerance=0.001,
number_of_history_steps=25,
)
right_electrode_iteration_control_parameters = IterationControlParameters(
damping_factor=0.5,
max_steps=120,
tolerance=0.001,
number_of_history_steps=25,
)
device_iteration_control_parameters = IterationControlParameters(
damping_factor=0.5,
max_steps=120,
tolerance=0.001,
number_of_history_steps=25,
)
"
However, it shows convergence error with following commands,
------------------------------------------------------------------------------+
| 99 E = -360.947 dE = 1.548518e-03 dH = 4.940824e-03 |
+------------------------------------------------------------------------------+
################################################################################
# #
# Warning: The calculation did not converge to the requested tolerance! #
# #
################################################################################
+------------------------------------------------------------------------------+
| |
Therefore, increase of number of steps not all has any impact to improve to sort out the convergence problem. This problems are more at a higher bias in loop run of I-V calculation.
Kindly help me.
