Thermoelectric properties of silicon and recycled silicon sawing waste

Nanocrystalline silicon: lattice dynamics and enhanced thermoelectric properties.

Silicon has several advantages when compared to other thermoelectric materials, but until recently it was not used for thermoelectric applications due to its high thermal conductivity, 156 W K(-1) m(-1) at room temperature. Nanostructuration as means to decrease thermal transport through enhanced phonon scattering has been a subject of many studies. In this work we have evaluated the effects of...

Atomistic Analysis of Thermoelectric Properties of Silicon Nanowires

The spds-spin-orbit-coupled tight-binding model and linearized Boltzmann transport theory is applied to calculate the electrical conductivity, the Seebeck coefficient, and the power factor of silicon nanowires (NWs) with diameters D<12nm. Using experimentally measured values for the lattice thermal conductivity we estimate the room temperature thermoelectric figure of merit to be ZT~1. Keywords...

Analytical modeling of silicon thermoelectric microcooler

Due to its inherently favorable properties, doped single-crystal silicon has potential application as an on-chip thermoelectric microcooler for advanced integrated circuits. In this paper, an analytical thermal model for silicon microcooler, which couples Peltier cooling with heat conduction and heat generation in the silicon substrate, and which includes heat conduction and heat generation in ...

Improve thermoelectric efficiency of silicon nanowires

Holey silicon as an efficient thermoelectric material.

This work investigated the thermoelectric properties of thin silicon membranes that have been decorated with high density of nanoscopic holes. These "holey silicon" (HS) structures were fabricated by either nanosphere or block-copolymer lithography, both of which are scalable for practical device application. By reducing the pitch of the hexagonal holey pattern down to 55 nm with 35% porosity, ...