Enhanced thermoelectric performance of (Ta<sub>1−<i>x</i></sub>Mo<sub><i>x</i></sub>)<sub>4</sub>SiTe<sub>4</sub>/polyvinylidene fluoride (PVDF) organic–inorganic flexible thermoelectric composite films
Recently, one-dimensional van der Waals crystalline Ta<sub>4</sub>SiTe<sub>4</sub> has been reported as a promising component to form flexible organic/inorganic thermoelectric films due to their unique structure and excellent electronic transport properties. However, Ta<sub>4</sub>SiTe<sub>4</sub> based flexible composite films carefully tuned by elemental doping have not been studied yet. In this study, we systematically synthesized (Ta<sub>1-<i>x</i></sub>Mo<sub><i>x</i></sub>)<sub>4</sub>SiTe<sub>4</sub> whiskers, and a series of (Ta<sub>1-<i>x</i></sub>Mo<sub><i>x</i></sub>)<sub>4</sub>SiTe<sub>4</sub>/PVDF composite films with varying Mo doping concentrations were also prepared. Upon doping Mo at the Ta-sites, the electrical conductivity was dramatically enhanced, while the Seebeck coefficient decreased with a higher doping content. As a result, (Ta<sub>0.995</sub>Mo<sub>0.005</sub>)<sub>4</sub>SiTe<sub>4</sub>/PVDF exhibited a maximum power factor of 547.5 μW m<sup>-1</sup> K<sup>-2</sup>, which is among the highest for organic-inorganic composite films and is more than double that of the undoped Ta<sub>4</sub>SiTe<sub>4</sub>/PVDF composite film.
Authors
- Peng‐an Zong (ORCID: https://orcid.org/0000-0003-2179-8261)
- Tingwei Yin (ORCID: https://orcid.org/0009-0000-0466-5841)
- Sanyin Qu (ORCID: https://orcid.org/0000-0001-5121-4162)
- Miao Liu (ORCID: https://orcid.org/0000-0003-2419-0008)
- Dudi Ren
- Chenyu Ye
Institutions
- Nanjing Tech University (CN)
- Chinese Academy of Sciences (CN)
- Shanghai Institute of Ceramics (CN)
Publication Details
- Journal
- Nanoscale
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5nr00816f
- Citations
- 1
- Primary Topic
- Advanced Thermoelectric Materials and Devices
- Type
- article
- Field-Weighted Citation Impact
- 0.52