$usefieldmufunc

This function modifies the calculation method of mobility. Both electron and hole mobilities are considered electrical field-dependent terms with the default. However, you can define this function by using function usefielddependent_n(indEl, matind ,Ex,Ey,T,xp,yp) and function usefielddependent_p(indEl, matind, Ex, Ey, T, xp, yp).
The default follows the equation:

$\mu=\mu_0\times exp(\beta\sqrt{F})$,

where

• $\mu$ is the mobility,
• $\mu_0$ is the zero-field mobility,
• $\beta$ is the factor of the field dependence, and
• $F$ is the localized electric field.

Format

$usemunpfunc
    1  $\mu_e$  $\beta_e$  $\mu_h$  $\beta_h$

Parameter explanation

• $\mu_e$: the zero-field mobility of electron. $(cm^{2}eV^{-1}s^{-1})$
• $\beta_e$: the factor of electron. $(eV^{-1/2})$
• $\mu_h$: the zero-field mobility of hole. $(cm^{2}eV^{-1}s^{-1})$
• $\beta_h$: the factor of hole. $(eV^{-1/2})$

Related commands

function usefielddependent_n(indEl, matind ,Ex,Ey,T,xp,yp), function usefielddependent_p(indEl, matind, Ex, Ey, T, xp, yp), $useemunfunc, $useemupfunc