The influence of diffusion on the current shape in the time-of-flight (TOF) experiment under conditions of the quasiequilibrium transport has been considered. An analytical expression for the transient current density has been obtained for the case of the reflecting front electrode. The expression has been found to be in a better agreement with the Monte-Carlo numerical modeling than the usual expression based on the standard convection–diffusion equation. We found an estimate of the minimum layer thickness for a flat plateau appearance on TOF current transients.

中文翻译：

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载流子在有机晶体薄层中的漂移和扩散的理论分析

在准平衡传输条件下，已经考虑了扩散对飞行时间（TOF）实验中电流形状的影响。对于反射前电极的情况，已经获得了瞬态电流密度的解析表达式。已经发现，与基于标准对流扩散方程的常用表达式相比，该表达式与蒙特卡洛数值模型更好地吻合。我们发现了在TOF电流瞬变上出现平坦平台外观的最小层厚度的估计值。