Towards Current-Characteristic Simulation of p-i-n Photodiodes based on Spectral Method

In this paper, we present a formulation of the cur- rent characteristics of p-i-n photodiodes using the spectral method. Analytic solution in Fourier space, which is used for the calculation of photocurrent, has been developed. Additionally, we take into account the diusion eect, which has been conventionally ne- glected in non-stationary states (2). In spite of the significant reduction in calculation time, our calcula- tion results are comparable to those of a 2D device simulator.