Date of Award


Degree Type


Degree Name

Master of Science in Electrical and Computer Engineering (MSECE)


Electrical and Computer Engineering

First Advisor

Gerhard Klimeck

Committee Chair

Gerhard Klimeck

Committee Member 1

Supriyo Data

Committee Member 2

Tillmann Kubis


In this thesis, the coherent and incoherent transport simulation capabilities of the multipurpose nanodevice simulation tool NEMO5 are presented and applied on transport in tunneling field-effect transistors (TFET). A gentle introduction is given to the non-equilibrium Green's function theory. The comparison with experimental resistivity data confirms the validity of the electron-phonon scattering models. Common pitfalls of numerical implementations such as current conservation, energy mesh resolution, and recursive Green's function stability and the applicability of common approximations of scattering self-energies are discussed. The impact of phonon-assisted tunneling on the performance of TFETs is exemplified with a concrete Si nanowire device. The communication-efficient implementation of self-energies in NEMO5 is demonstrated with demonstration of strong scaling of the incoherent scattering code.