檢視 $fieldenhancemultitraps 的原始碼

Setting for traps (2D) with multi-levels and field enhanced traps.

<big><big>'''Format'''</big></big><br />

 $fieldenhancemultitraps
 <math>N_{levels}</math>
 <math>N_{trap}</math> Et degeneracy <math>\tau_{e1}</math> <math>\tau_{p1}</math> <math>\beta</math> <math>Efactor</math>   <math>N_{trap_2}</math> Et degeneracy  <math>\tau_{e,2}</math>  <math>\tau_{p,2}</math> <math>\beta</math> <math>Efactor</math>   ... (... Repeat  <math>N_{levels}</math>) ... <math>N_{trap_N}</math> Et degeneracy  <math>\tau_{e,N}</math>  <math>\tau_{p,N}</math> <math>\beta</math> <math>Efactor</math> 
 <math>N_{trap}</math> Et degeneracy <math>\tau_{e1}</math> <math>\tau_{p1}</math> <math>\beta</math> <math>Efactor</math> <math>N_{trap_2}</math> Et degeneracy  <math>\tau_{e,2}</math>  <math>\tau_{p,2}</math> <math>\beta</math> <math>Efactor</math>  ... (... Repeat  <math>N_{levels}</math>) ... <math>N_{trap_N}</math> Et degeneracy  <math>\tau_{e,N}</math>  <math>\tau_{p,N}</math> <math>\beta</math> <math>Efactor</math> 
 ...
 ...
 ...
 <math>N_{trap}</math> Et degeneracy <math>\tau_{e1}</math> <math>\tau_{p1}</math> <math>\beta</math> <math>Efactor</math>  <math>N_{trap_2}</math> Et degeneracy  <math>\tau_{e,2}</math>  <math>\tau_{p,2}</math> <math>\beta</math> <math>Efactor</math>  ... (... Repeat  <math>N_{levels}</math>) ... <math>N_{trap_N}</math> Et degeneracy  <math>\tau_{e,N}</math>  <math>\tau_{p,N}</math><math>\beta</math> <math>Efactor</math> 

'''<big><big>Parameter Explanation</big></big>''' 

* <math>N_{levels}</math>
* <math>N_{trap}</math> : trap density. <math>cm^{-3}</math> negative sign as electron trap and poisitive sign as hole trap<br> 
* Et : depth of trap related to Ec. <math>(eV)</math><br> 
* degeneracy : degeneracy of traps, we usually set as 1. 
* <math>\tau_{e}</math> : nonradiative lifetime of electrons. <math>(Sec.)</math><br>
* <math>\tau_{h}</math> : nonradiative lifetime of holes. <math>(Sec.)</math><br>
* <math>\beta</math> <math>Efactor</math> : enhanced factor with  <math>exp(\beta |E
|^{Efactor})</math> 



Note that usually  <math> \tau = \frac{1}{N_{t}v_{th}\sigma} </math>. Therefore, when Nt is increased, the non-radiative lifetime should decrease as well. Users need to adjust this by themselves. 


<big><big>'''Example'''</big></big> 
 $fieldenhancemultitraps
 2
 -1e+17  1.1  1  1.0e-7  1.0e-7 1.0e-4 0.5  1e+18  2.1  1  1.0e-7  1.0e-7  1.0e-4 0.5 
 -1e+17  1.1  1  1.0e-7  1.0e-7 1.0e-4 0.5  1e+18  2.1  1  1.0e-7  1.0e-7  1.0e-4 0.5 
 -1e+17  1.1  1  1.0e-7  1.0e-7 1.0e-4 0.5  1e+18  2.1  1  1.0e-7  1.0e-7  1.0e-4 0.5 
 -1e+17  1.1  1  1.0e-7  1.0e-7 1.0e-4 0.5  1e+18  2.1  1  1.0e-7  1.0e-7  1.0e-4 0.5 
 -1e+17  1.1  1  1.0e-7  1.0e-7 1.0e-4 0.5  1e+18  2.1  1  1.0e-7  1.0e-7  1.0e-4 0.5 

This means 2 trap levels. One is electron trap where the trap level is below conduction band 1.1eV. The other trap levels is hole trap levels, which is below conduction band 2.1 eV