| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alloys and Compounds for Thermoelectric and Solar Cell Applications IX
|
| Presentation Title |
Impact of Surface Engineering in Silicon Film Thermoelectrics |
| Author(s) |
Masahiro Nomura |
| On-Site Speaker (Planned) |
Masahiro Nomura |
| Abstract Scope |
Phonon backscattering at the engineered surface is also an effective method to reduce thermal conductivity as well as alloy and boundary scatterings to develop highly efficient thermoelectric material. Deposition of an ultra-thin Al layer (5-10 angstrom) forms Al/Si alloys, and the nanodots backscatter phonons strongly but not for charge carriers, which resulted in a 40% increase in ZT and power density at room temperature. We also introduce the impact of nanopillars formed on the surface of a thin Si film, which can be used for the fabrication of low-cost and large-area planar type thermoelectric power generators. |
| Proceedings Inclusion? |
Planned: |