Electron transit time through depletion layer of GaInAs pn junction
Using an empirical formula for the electron velocity, the transist time through a Ga0.47In0.53As pn junction as a function of the applied voltage and other parameters is calculated. It is shown that a minimum transit time exists and that it can be used for modelling of the response time of a pin or avalanche photodiode made on an epitaxial Ga0.47In0.53As layer on InP substrate.