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Boltzmann Transport Simulator for CNTs
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20 Feb 2008 | Tools | Contributor(s): Zlatan Aksamija, Umberto Ravaioli
Low Temperature Enhancement of the Thermoelectric Seebeck Coefficient in Semiconductor Nanoribbons
09 Nov 2016 | Online Presentations | Contributor(s): Kommini Adithya, Zlatan Aksamija
IWCE 2015 Presentation. We propose a novel approach to achieving a narrow window-shaped TDF through a combination of a step-like 2-dimensional density-of-states (DOS) and inelastic optical phonon scattering. A shift in the onset of scattering with respect to the step-like DOS creates a TDF which peaks over a narrow band of energies. We perform a numerical simulation of carrier transport in silicon nanoribbons based on numerically solving the coupled Schrödinger-Poisson equations together with transport in the semi-classical Boltzmann formalism. ...
Thermal Conductivity of III-V Semiconductor Superlattices
25 Jan 2016 | Online Presentations | Contributor(s): Song Mei, Zlatan Aksamija, Irena Knezevic
IWCE 2015 presentation. An InGaAs/InAlAs superlattice (SL) on an InP substrate is the mainstream material system for mid- IR quantum cascade lasers (QCL). The thermal conductivity tensor of SLs is critical for energy-efficient performance of QCLs; understanding the relative importance of different factors that influence heat flow in these systems is essential in device modeling and optimization . It is known that thermal conduction in SLs is extremely anisotropic, with the...
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