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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Minnich, Austin Chen, Gang |
| Copyright Year | 2008 |
| Abstract | Modeling the thermoelectric properties of nanocomposites is difficult due to the complex grain boundary scattering processes which scatter both electrons and phonons. In this work we describe a code we developed which numerically calculates the electrical and thermal properties of bulk and nanocomposite thermoelectric materials using the Boltzmann equation under the relaxation time approximation. The code is capable of calculating all the relevant thermoelectric properties over a wide range of temperatures, doping concentrations, and compositions, allowing for a full characterization of the material. We model nanocomposites by incorporating a grain boundary scattering rate based on a simple model we developed and models in the literature. The code and grain boundary scattering models are validated on bulk data and data from nano-SiGe, and are then applied to other candidate thermoelectric materials to see if they would be good candidates for nanocomposites. The analysis shows that GaAs might be promising as a nanocomposite thermoelectric material. |
| Sponsorship | Nanotechnology Institute |
| Starting Page | 31 |
| Ending Page | 38 |
| Page Count | 8 |
| File Format | |
| ISBN | 0791843239 |
| DOI | 10.1115/ENIC2008-53003 |
| e-ISBN | 0791838323 |
| Volume Number | ASME 2008 3rd Energy Nanotechnology International Conference |
| Conference Proceedings | ASME 2008 3rd Energy Nanotechnology International Conference collocated with the Heat Transfer, Fluids Engineering, and Energy Sustainability Conferences |
| Language | English |
| Publisher Date | 2008-08-10 |
| Publisher Place | Jacksonville, Florida, USA |
| Access Restriction | Subscribed |
| Subject Keyword | Grain boundaries Thermal properties Relaxation (physics) Temperature Approximation Nanocomposites Electromagnetic scattering Gallium arsenide Phonons Modeling Electrons |
| Content Type | Text |
| Resource Type | Article |
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