以电流连续性方程为基础,用易测量的注入电流密度来确定载流子浓度的边界值,得出载流子浓度和电流密度的解析表达式.计算并讨论了电子密度和电子电流密度在器件中的分布,电场对它们的影响以及电场与势垒对复合效率的影响.该模型较好地解释了有关实验现象.

Based on the equation of the current continuity, the analytical expression of carrier and current densities is presented. In the calculation, the boundary condition is determined by considering the injection current that can be easily measured in experiments. We discussed the distributions of electron density and electron current density, analyzed the influence of electric field on the electron density, electron current density and recombination efficeiency, and investigated the effect of the electric field and potential barrier on recombination efficiency. The theoretical values based on the model are basically in agreement with the results that have been reported in the literature.