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Enhanced Thermoelectric Characteristics of Ag2Se Nanoparticle Thin Films by Embedding Silicon Nanowires
- Source :
- Energies, Volume 13, Issue 12, Energies, Vol 13, Iss 3072, p 3072 (2020)
- Publication Year :
- 2020
- Publisher :
- MDPI AG, 2020.
-
Abstract
- A solution-processable Ag2Se nanoparticle thin film (NPTF) is a prospective thermoelectric material for plastic-based thermoelectric generators, but its low electrical conductivity hinders the fabrication of high performance plastic-based thermoelectric generators. In this study, we design Ag2Se NPTFs embedded with silicon nanowires (SiNWs) to improve their thermoelectric characteristics. The Seebeck coefficients are &minus<br />233 and &minus<br />240 &micro<br />V/K, respectively, for a Ag2Se NPTF alone and a Ag2Se NPTF embedded with SiNWs. For the Ag2Se NPTF embedded with SiNWs, the electrical conductivity is improved from 0.15 to 18.5 S/m with the embedment of SiNWs. The thermal conductivities are determined by a lateral thermal conductivity measurement for nanomaterials and the thermal conductivities are 0.62 and 0.84 W/(m&middot<br />K) for a Ag2Se NPTF alone and a Ag2Se NPTF embedded with SiNWs, respectively. Due to the significant increase in the electrical conductivity and the insignificant increase in its thermal conductivity, the output power of the Ag2Se NPTF embedded with SiNWs is 120 times greater than that of the Ag2Se NPTF alone. Our results demonstrate that the Ag2Se NPTF embedded with SiNWs is a prospective thermoelectric material for high performance plastic-based thermoelectric generators.
- Subjects :
- Control and Optimization
Materials science
Fabrication
thin film
Energy Engineering and Power Technology
02 engineering and technology
thermoelectric
010402 general chemistry
lcsh:Technology
01 natural sciences
Thermal conductivity measurement
Thermal conductivity
Electrical resistivity and conductivity
Thermoelectric effect
Electrical and Electronic Engineering
Thin film
Engineering (miscellaneous)
silver selenide nanoparticles
lcsh:T
Renewable Energy, Sustainability and the Environment
business.industry
021001 nanoscience & nanotechnology
Thermoelectric materials
silicon nanowires
0104 chemical sciences
Thermoelectric generator
Optoelectronics
0210 nano-technology
business
Energy (miscellaneous)
Subjects
Details
- ISSN :
- 19961073
- Volume :
- 13
- Database :
- OpenAIRE
- Journal :
- Energies
- Accession number :
- edsair.doi.dedup.....ddd0ad2e05584a0e7a62fb556d437eb8