sensor simulation
Hi all, when one talk microscopic simulation of charge transport, one usally refer to monte-carlo device simulation as the method to extract macroscopic behavirour of a device for instance current versus voltage, through first solving Schrödinger equation for the crystal, then in total energy calculations one can extact the vibtation frequecies and modes of the atoms in the crystal, the so called phonon dispersion.
Havin the electronic bandstructure and the phonon-dispersionrelation, one have have experimental data, to fit scattering parameters.
read for instance Fundamentals of Semicondtctors by Manuel Cardona availible from MCU. Its the first edition. In the second that I have you can read about scattering parameters and transport in semiconductors.
Actually this fitting procedure I've never understood and if somebody can explain it to me I'll be greatful.
Either you take the effective masses from the bandstructure, you do some black-box(for me) monte-carlo and you end up with the avergae volocities for electrons, and then you do the same for holes, Then you can extract the mobilities.
Having the mobilities, the right value of the scattering parameters one can simulate anything. With the monte-carlo method it is then possible to see the Hall-effect within a simulated semiconductor.
Check out the IBM site for the DAMOCLES program, there you'll get most of the theory behind monte-carlo device simulation.
Important reserachers are Carlo Jacoboni, Karl Hess.
The newest ATLAS in SILVACO includes the monte-carlo program by Jacoboni for simulating III-IV semiconductors.
regards,
StoppTidigare