nanoHUB-U TEAS Thermoelectricity - Atoms to Systems: Scientific Overview
10 Oct 2013 | Online Presentations | Contributor(s): Ali Shakouri, Supriyo Datta, Mark Lundstrom
This five-week short course aims to introduce students to the thermoelectric theory and applications using a unique, “bottom up” approach to carrier transport that has emerged from research on molecular and nanoscale electronics. Intuition about thermoelectric relations and efficiency limits are obtained by studying a single atom. The first two weeks of the course introduce this new perspective and connects it to the traditional treatment of thermoelectric science. Landauer formalism provides a unified framework to study both electron and phonon transport.
Nanoscale Opto Thermo Electric Energy Conversion Devices
28 May 2008 | Online Presentations | Contributor(s): Ali Shakouri
We review solid-state devices that allow direct conversion of heat into electricity. We describe fundamental and practical limits of conventional thermoelectric materials. Novel metal-semiconductor nanocomposites are developed where the heat and charge transport are modified at the atomic level. Potential to reach high power densities and high conversion efficiencies will be discussed. We also describe how similar principles can be used to reduce heating in optoelectronic devices and make micro refrigerators on a chip in order to remove hot spots in integrated circuits.
Nano Solutions to Our Impending Energy Crisis
17 Nov 2012 | Online Presentations | Contributor(s): Ali Shakouri
In this talk we review some of the advances in nanoscale energy conversion devices and discuss about the challenges and opportunities to provide a clean energy infrastructure. Couple of examples from solar and thermoelectric materials, devices and systems will be given and the scale of the necessary change will be discussed.
Nanoscale Electrothermal Energy Transport
12 Jul 2013 | Online Presentations | Contributor(s): Ali Shakouri
Thermoreflectance imaging is used to study Peltier cooling and Joule heating in devices with 800ps time and submicron spatial resolution. The ballistic heat conduction and the transition between energy and entropy transport in ultra short times and in thin film devices will be discussed. Finally a brief overview of new research initiatives at the Birck center will be presented.
Thin-Film and Multi-Element Thermoelectric Devices Simulator
17 Jul 2012 | Tools | Contributor(s): Je-Hyeong Bahk, Megan Youngs, Zach Schaffter, Kazuaki Yazawa, Ali Shakouri
Tool to simulate both micro-scale thin-film thermoelectric devices and large-scale multi-element thermoelectric modules for cooling and power generation