The one dimensional continuity equations of n-on-p planar PN junction are solved at different boundary conditions. Generalized solutions of photocarrier concentration are given in this paper. 摘要对一维情况下平面PN结的连续性方程进行了求解，给出了不同边界条件下光生载流子浓度的一般形式解，并对结果进行了分析讨论。