An approximate two-dimensional transient analysis of charge transport in a buried-channel charge-coupled device

Overview & Synopsis

A method for the approximate transient analysis of the BCCD is presented. The solution is obtained by considering only the nearly-linear Poisson/Laplace's equation in a completelydepleted/charge-neutral region and subsequent estimate of carrier flow across the interface between the charged and neutral regions. Additional factors are introduced in the solution of the equations to ensure that current continuity and charge conservation are maintained. Hence mechanisms leading to small transfer inefficiencies cannot be represented. An example is presented showing the effect of clock waveform overlap on the transfer process. In addition quasi static potential and charge distributions are compared with a one-dimensional steady state exact simulation.