"$negfionizedimpurity" 修訂間的差異
出自 DDCC TCAD TOOL Manual
| 行 7： | 行 7： | ||
1.0e24 1.0e0 300 400 |
1.0e24 1.0e0 300 400 |
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# NdSD NdC Channeli Channelf |
# NdSD NdC Channeli Channelf |
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| − | In this case we have 681 mesh grids from drain(left) to source(right), |
+ | 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>. |
於 2018年7月30日 (一) 02:08 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)
Example:
$negfionizedimpurity 1.0e24 1.0e0 300 400 # NdSD NdC Channeli Channelf
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 
.
