檢視 $callexciton 的原始碼

Function for calculate the exciton distribution. We usually use this equation for organic material. Behavior of exciton will follow this equation.


<math>\frac{dn_{ex}}{dt}=D{\nabla}^2{n_{ex}(r)}-\frac{n_{ex}(r)}{\tau}-\gamma{n_{ex}(r)}^2+G</math>


Where　
* <math>D</math> is diffusion coefficient.
* <math>\tau</math> is relaxation time of exciton.
* <math>\gamma</math> is annihilation rate constant.
* <math>G</math> is exciton generation rate.

'''<big><big>Format</big></big>'''<br />
 $callexciton
 n
 d kr knr gamma g<br />

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

* n : the number of tables we usually set n as 5. 
* d : diffusion coefficient. <math>(cm^{2})s^{-1}</math>
* kr : radiatvie rate constant   <math>(s^{-1})</math>
* knr :non-radiative rate constant  <math>(s^{-1})</math>
* gamma : quenching coefficient.  <math>(cm^{2})s^{-1}</math>
* g : generation rate if you wanna let whole recombination rate change into exciton you should set g as 1.

<big>'''<big>Example</big>'''</big> <br />

 $callexciton
 5
 2e-14 20000 3000 1e-12 1
 2e-14 20000 3000 1e-12 1
 2e-14 20000 3000 1e-12 1
 2e-14 20000 3000 1e-12 1
 2e-14 20000 3000 1e-12 1