$ifimpact new

$ifimpact_new is a modified function to turn on the impact ionization. It is a field and current-dependent function that will rely on the electric field in the simulation program. impact new applies new functions

The impact ionization generation rate is decided by
<be>

Method 1:
$G_{i m p a c t} = \frac{| J n |}{e} \times α_{n} + \frac{| J p |}{e} \times α_{p}$

$α_{n} = a_{n} * e x p (- | {(\frac{b_{n} | J n |}{\vec{E} \cdot \vec{J n}})}^{c_{n}} |)$

$α_{p} = a_{p} * e x p (- | {(\frac{b_{p} | J p |}{\vec{E} \cdot \vec{J p}})}^{c_{p}} |)$

The way to input this command is

$ifimpact_new
1 6  $a_{n} b_{n} c_{n} a_{p} b_{p} c_{p}$ 
1 6   $a_{n} b_{n} c_{n} a_{p} b_{p} c_{p}$ 
1 6   $a_{n} b_{n} c_{n} a_{p} b_{p} c_{p}$ 
1 6   $a_{n} b_{n} c_{n} a_{p} b_{p} c_{p}$ 
...
...
...  repeat for n-layers

Method 2:
$G_{i m p a c t} = \frac{| J n |}{e} \times α_{n} + \frac{| J p |}{e} \times α_{p}$

$A s n = a_{n} (1 + c_{n} (t - 300)) * (| \vec{E} |)^{γ_{n}}$
$B s n = e x p (- {| \frac{b_{n} (1 + d_{n} (t - 300))}{| \vec{E} |} |}^{Δ_{n}})$
$α_{n} = A s n * B s n$
$A s p = a_{p} (1 + c_{p} (t - 300)) * (| \vec{E} |)^{γ_{p}}$
$B s p = e x p (- {| \frac{b_{p} (1 + d_{p} (t - 300))}{| \vec{E} |} |}^{Δ_{p}})$
$α_{p} = A s p * B s p$

The way to input this command is

$ifimpact_new
2 12   $a_{n} b_{n} c_{n} d_{n} γ_{n} Δ_{n} a_{p} b_{p} c_{p} d_{p} γ_{p} Δ_{p}$ 
2 12   $a_{n} b_{n} c_{n} d_{n} γ_{n} Δ_{n} a_{p} b_{p} c_{p} d_{p} γ_{p} Δ_{p}$ 
...
...
...  repeat for n-layers

Method 3:
$G_{i m p a c t} = \frac{| J n |}{e} \times a_{n} \times α_{n} + \frac{| J p |}{e} \times a_{p} \times α_{p}$

 $α_{n} = \frac{b_{n} * \frac{3}{2} k_{B} T / e}{s a t_{n} * τ_{n}},$ 

 $α_{p} = \frac{b_{p} * \frac{3}{2} k_{B} T / e}{s a t_{p} * τ_{p}},$

The way to input this command is

$ifimpact_new
3 8   $a_{n} b_{n} s a t_{n} τ_{n} a_{p} b_{p} s a t_{p} τ_{p}$ 
3 8   $a_{n} b_{n} s a t_{n} τ_{n} a_{p} b_{p} s a t_{p} τ_{p}$ 
3 8   $a_{n} b_{n} s a t_{n} τ_{n} a_{p} b_{p} s a t_{p} τ_{p}$ 
3 8   $a_{n} b_{n} s a t_{n} τ_{n} a_{p} b_{p} s a t_{p} τ_{p}$ 
...
...
...  repeat for n-layers

Method 4:
$G_{i m p a c t} = \frac{| J n |}{e} \times A s n \times e x p (- {(\frac{B s n}{| E |})}^{β_{n}}) + \frac{| J p |}{e} \times A s p \times e x p (- {(\frac{B s p}{| E |})}^{β_{p}})$

$I f : | \vec{E} | < E_{g r a n}, A s n = A 1_{n} (1 + A t_{n} * ({(\frac{T}{300})}^{A m_{n}} - 1))$
$B s n = B 1_{n} (1 + B t_{n} * ({(\frac{T}{300})}^{B m_{n}} - 1))$
$I f : | \vec{E} | > = E_{g r a n}, A s n = A 2_{n} (1 + A t_{n} * ({(\frac{T}{300})}^{B 2_{n}} - 1))$
$B s n = B 2_{n} (1 + B t_{n} * ({(\frac{T}{300})}^{B m_{n}} - 1))$
$I f : | \vec{E} | < E_{g r a n}, A s p = A 1_{p} (1 + A t_{p} * ({(\frac{T}{300})}^{A m_{p}} - 1))$
$B s p = B 1_{p} (1 + B t_{p} * ({(\frac{T}{300})}^{B m_{p}} - 1))$
$I f : | \vec{E} | > = E_{g r a n}, A s p = A 2_{p} (1 + A t_{p} * ({(\frac{T}{300})}^{B 2_{p}} - 1))$
$B s p = B 2_{p} (1 + B t_{p} * ({(\frac{T}{300})}^{B m_{p}} - 1))$

The way to input this command is

$ifimpact_new
4 19   $E_{g r a n} A 1_{n} A 2_{n} A t_{n} A m_{n} B 1_{n} B 2_{n} B t_{n} B m_{n} β_{n} A 1_{p} A 2_{p} A t_{p} A m_{p} B 1_{p} B 2_{p} B t_{p} B m_{p} β_{p}$

...
...  repeat for n-layers

$ifimpactusepureExy
$ifimpact_ion

The $ifimpact_ion setting for 1D-DDCC in GUI interface

1.Press the Additional Functions.
2.Press the Inpact Ionization.
3.Choose you need parameters.
4.You can modify parameters in Number 4.
Number 4 correspond to $a_{n} b_{n} c_{n} a_{p} b_{p} c_{p}$

The $ifimpact_ion setting for 2D-DDCC in GUI interface is here
1. Press Additional Functions.
2. Check the box for Impact Ionization and its related parameters.
3. Please fill in these fields as needed!

$ifimpact new

導覽選單

搜尋