A novel physically based photodiode model for optoelectronic circuit simulations

In this work we present a new physically based electrical equivalent circuit (EEC) of a photodiode. This EEC is capable to correctly predict the behaviour of the diode and can be used as a macro model in circuit simulation programs for dc, ac and transient simulations. Our model includes drift and diffusion currents of the photodiode. The EEC is versatile and can be used in many different applications. The effectiveness of the proposed macro model is highlighted by comparing results of the model with those of numerical device simulation.