"$negfionizedimpurity" 修訂間的差異
出自 DDCC TCAD TOOL Manual
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Example: |
Example: |
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$negfionizedimpurity |
$negfionizedimpurity |
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| − | 1.0e24 1.0e0 300 400 |
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| + | doping density (S and D) doping density (channel) channel-i channel-f |
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In this case we have 681 mesh grids from drain(left) to source(right), and the position of channel is from 300 to 400. The doping concentration for source and drain is <math>1*10^{24}(1/m^2)</math>, and that for channel is <math>1*10^{0}(1/m^2)</math>.<br> |
In this case we have 681 mesh grids from drain(left) to source(right), and the position of channel is from 300 to 400. The doping concentration for source and drain is <math>1*10^{24}(1/m^2)</math>, and that for channel is <math>1*10^{0}(1/m^2)</math>.<br> |
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於 2018年7月30日 (一) 09:24 的修訂
$negfionizedimpurity is the command to setup the related parameters of ionized impurity scattering.
The equation of ionized impurity scattering:
![W_{imp}(k)=4\pi F(\frac{2k}{\lambda})^{2}[\frac{1}{\sin^2(\frac{\theta}{2})+(\frac{\lambda}{2k})^2}]^{2}](/mediawiki/images/math/6/6/8/6687c83c4a4989a497a8373d0f59c360.png)
![F=\frac{1}{\hbar}[\frac{Ze^{2}}{\epsilon}]^{2}\frac{N_{1D}(E_{k})}{32k^{4}}N_{I}](/mediawiki/images/math/a/f/a/afa443190ef1e46e78f3fcf8a754f3e8.png)
$negfionizedimpurity NdSD NdC Channeli Channelf
Example:
$negfionizedimpurity doping density (S and D) doping density (channel) channel-i channel-f
In this case we have 681 mesh grids from drain(left) to source(right), and the position of channel is from 300 to 400. The doping concentration for source and drain is 
, and that for channel is 
.
related commands:
$ifsolvenegf, $negfifscattering
