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Full-Band Monte Carlo Device Simulation of a Si/SiGe-HBT with a Realistic Ge Profile

Christoph JUNGEMANN, Stefan KEITH, Bernd MEINERZHAGEN

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Summary :

This work presents the first comprehensive full-band Monte Carlo model for the simulation of silicon/silicon-germanium devices with arbitrary germanium profiles. The model includes a new CPU and memory efficient method for the discretization of the Brillouin zone based on adaptive nonuniform tetrahedral grids and a very efficient method for transfers through heterointerfaces in the case of irregular -space grids. The feasibility of the FB-MC simulation is demonstrated by application to an industrial HBT with a graded germanium profile and different aspects of the microscopic carrier transport are discussed. Internal distributions of the transistor are calculated with a very low noise level and high efficiency allowing a detailed investigation of the device behavior.

Publication
IEICE TRANSACTIONS on Electronics Vol.E83-C No.8 pp.1228-1234
Publication Date
2000/08/25
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section PAPER (Special Issue on 1999 International Conference on Simulation of Semiconductor Processes and Devices (SISPAD'99))
Category
Device Modeling and Simulation

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