求解电荷中性方程的matlaB程序,主要是求解一个数值方程，求解量为费米能级，得到能级后就可以算出电子和空穴的浓度。-Solving the charge neutrality equation matlaB procedures, mainly to solve a numerical equation solving capacity of the Fermi level, by level can be calculated after the electron and hole concentrations.