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Breaking the tradeoff among thermoelectric parameters by multi composite of porosity and CNT in AZO films.
- Source :
-
Energy . Jun2021, Vol. 225, pN.PAG-N.PAG. 1p. - Publication Year :
- 2021
-
Abstract
- Multi-nanocomposite is an effective method to achieve high thermoelectric (TE) performance by breaking the tradeoff among three TE parameters. This paper presents a comparative study of incorporated carbon nanotube (CNT)/Au in evaporated porous Al-doped ZnO (AZO) films. The effect of the nanocomposite interface on scattering of carriers and phonons is used to independently tune thermal conductivity and power factor in the multi-nanocomposite AZO films. This breaks the tradeoff and improves the figure of merit (ZT) of the film. Moreover, the temperature gradient retains in the out-of-plane of the films. These make the AZO film composited CNT and porosity have higher output power than that of the non-porous films. This provides a simple method for the low-dimension film to increase the TE properties through breaking the tradeoff and makes the TE materials suitable for efficient harvesting in low-grade waste heat. [Display omitted] • This study presents a simple method to prepare multi-nanocomposite film. • Multi-nanocomposite breaks the tradeoff among thermoelectric parameters. • Film with CNT and porosity has higher ZT value and output power. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03605442
- Volume :
- 225
- Database :
- Academic Search Index
- Journal :
- Energy
- Publication Type :
- Academic Journal
- Accession number :
- 149985723
- Full Text :
- https://doi.org/10.1016/j.energy.2021.120320