Back to Search
Start Over
Greatly Enhanced Thermoelectric Performance of Flexible Cu 2−x S Composite Film on Nylon by Se Doping.
- Source :
-
Nanomaterials (2079-4991) . Jun2024, Vol. 14 Issue 11, p950. 12p. - Publication Year :
- 2024
-
Abstract
- In this work, flexible Cu2−xS films on nylon membranes are prepared by combining a simple hydrothermal synthesis and vacuum filtration followed by hot pressing. The films consist of Cu2S and Cu1.96S two phases with grain sizes from nano to submicron. Doping Se on the S site not only increases the Cu1.96S content in the Cu2−xS to increase carrier concentration but also modifies electronic structure, thereby greatly improves the electrical properties of the Cu2−xS. Specifically, an optimal composite film with a nominal composition of Cu2−xS0.98Se0.02 exhibits a high power factor of ~150.1 μW m−1 K−2 at 300 K, which increases by ~138% compared to that of the pristine Cu2−xS film. Meanwhile, the composite film shows outstanding flexibility (~97.2% of the original electrical conductivity is maintained after 1500 bending cycles with a bending radius of 4 mm). A four-leg flexible thermoelectric (TE) generator assembled with the optimal film generates a maximum power of 329.6 nW (corresponding power density of 1.70 W m−2) at a temperature difference of 31.1 K. This work provides a simple route to the preparation of high TE performance Cu2−xS-based films. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CARRIER density
*NYLON
*HYDROTHERMAL synthesis
*HOT pressing
*POWER density
Subjects
Details
- Language :
- English
- ISSN :
- 20794991
- Volume :
- 14
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Nanomaterials (2079-4991)
- Publication Type :
- Academic Journal
- Accession number :
- 177863588
- Full Text :
- https://doi.org/10.3390/nano14110950