The Surface Plasmon Resonance Effect Applied in Studying the N-type Bi2Te2.7Se0.3 Thermoelectric film
Date Issued
2015
Date
2015
Author(s)
Huang, Po-Hsuan
Abstract
The experiment by sputtering and heat treatment process to form a silver nanoparticles with different morphologies. We observe the thermoelectric properties and microstructure whether the silver nanoparticles can apply to improve the thermoelectric efficiency. As the study found, covering different thickness of thermoelectric thin film layer above the silver nanoparticles, when the thickness of thermoelectric film is 64 nm. The Raman spectroscopy has obvious peaks. And sputtering time of silver film is 10 seconds after vacuum annealing allowing the formation of nanoparticles. The annealing temperature is 400 ℃ and duration time is 30 minutes. As extremely close to the surface of nanoparticles will lead to a highly strong near-field enhanced electromagnetic fields, making the thermoelectric film under the plasmson resonance effect improve its power factor. The best thermoelectric power factor is 8.1 W/K2m.
Subjects
RF sputtering
Thermoelectric film
Surface plasmon
Power factor
Type
thesis