"$ifimpact ion" 修訂間的差異

出自 DDCC TCAD TOOL Manual
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</math><br><br>
 
</math><br><br>
   
 
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The way to input this command is <br>
Gimpact=-absjn/ELCHG*impactratelayer(1,indEl)*&
 
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$ifimpact_ion
exp(-abs( ((impactratelayer(2,indEl)*absjn)/productEJ(1))**impactratelayer(3,indEl)))
 
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<math>a_{n} b_{n} c_{n} a_{p} b_{p} c_{p} </math>

於 2017年8月22日 (二) 11:07 的修訂

$ifimpact_ion is a function to turn on the impact ionization. It is a field and current dependent function which will rely on the electric field in the simulation program.

The impact ionization generation rate is decided by


G_impact =  \frac{|Jn|}{e} \times \alpha_n +\frac{|Jp|}{e} \times \alpha_p


\alpha_{n} = a_{n}*exp\left( - \left| \left(\frac{b_{n}|Jn|}{\vec{E}\cdot \vec{Jn}}\right)^{c_{n}} \right|\right)


\alpha_{n} = a_{p}*exp\left( - \left| \left(\frac{b_{p}|Jp|}{\vec{E}\cdot \vec{Jp}}\right)^{c_{p}} \right|\right)

The way to input this command is

$ifimpact_ion
a_{n} b_{n} c_{n} a_{p} b_{p} c_{p}