HOME    »    PROGRAMS/ACTIVITIES    »    Annual Thematic Program
Talk Abstract
Hybrid Particle-based Approach for Simulation of Semiconductor Devices: The Full-band Cellular Automata/Monte Carlo Method

Marco Saraniti
Illinois Institute of Technology

We present a hybrid particle-based Cellular Automaton/Monte Carlo (CA/MC) approach for simulation of electron and hole transport in semiconductor devices. In this implementation of the CA algorithm, the entire Brillouin zone is discretized using a non-uniform mesh in k-space, and a transition table is generated between all initial and final states on the mesh, greatly simplifying the final state selection of the conventional full-band MC algorithm. This method allows for fully anisotropic scattering rates within the full-band scheme, at the cost of increased memory requirements for the transition table itself. Good agreement is obtained between the CA model and previously reported results for the velocity-field characteristics and high field distribution function, which illustrate the potential accuracy of the technique. The hybrid CA/Monte Carlo algorithm is introduced to help alleviate the memory problems of the CA method while preserving the speed-up and accuracy. The self-consistent coupling of the carrier simulation algorithm with fast 2- and 3-D multi-grid poisson solvers is discussed, and aspects related to the multi-scale discretization of position space and time domain are stressed as well.

Joint work with Shela J. Wigger and Stephen M. Goodnick of Arizona State University.

Back to Workshop Schedule

Back to Reactive Flow and Transport Phenomena

Connect With Us: