Deviceization of high-performance and flexible Ag2Se films for electronic skin and servo rotation angle control
Ag<sub>2</sub>Se shows significant potential for near-room-temperature thermoelectric applications, but its performance and device design are still evolving. In this work, we design a novel flexible Ag<sub>2</sub>Se thin-film-based thermoelectric device with optimized electrode materials and structure, achieving a high output power density of over 65 W m<sup>-2</sup> and a normalized power density up to 3.68 μW cm<sup>-2</sup> K<sup>-2</sup> at a temperature difference of 42 K. By fine-tuning vapor selenization time, we strengthen the (013) orientation and carrier mobility of Ag<sub>2</sub>Se films, reducing excessive Ag interstitials and achieving a power factor of over 29 μW cm<sup>-1</sup> K<sup>-2</sup> at 393 K. A protective layer boosts flexibility of the thin film, retaining 90% performance after 1000 bends at 60°. Coupled with p-type Sb<sub>2</sub>Te<sub>3</sub> thin films and rational simulations, the device shows rapid human motion response and precise servo motor control, highlighting the potential of high-performance Ag<sub>2</sub>Se thin films in advanced applications.
Authors
- Zhuanghao Zheng (ORCID: https://orcid.org/0000-0002-2475-9826)
- Xiao‐Lei Shi (ORCID: https://orcid.org/0000-0003-0905-2547)
- Junze Zhang (ORCID: https://orcid.org/0000-0003-3943-8651)
- Guangxing Liang (ORCID: https://orcid.org/0000-0002-9033-4885)
- Wei‐Di Liu (ORCID: https://orcid.org/0000-0002-8271-639X)
- Dongyan Xu
- Jingting Luo (ORCID: https://orcid.org/0000-0003-4326-982X)
- Tianyi Cao (ORCID: https://orcid.org/0000-0003-2684-2890)
- Zhi‐Gang Chen (ORCID: https://orcid.org/0000-0002-9309-7993)
- Meng Li
- Fu Li (ORCID: https://orcid.org/0000-0001-5360-1174)
- Mohammad Nisar (ORCID: https://orcid.org/0000-0002-3371-1429)
- Yuexing Chen (ORCID: https://orcid.org/0000-0002-6879-2433)
- Zhong-Zhao Zha
- Zi-Nan Zhong
Institutions
- Queensland University of Technology (AU)
- Chinese University of Hong Kong (HK)
- Shenzhen University (CN)
Publication Details
- Journal
- Nature Communications
- Published
- 2024-09-27
- DOI
- https://doi.org/10.1038/s41467-024-52680-0
- Citations
- 58
- Primary Topic
- Advanced Thermoelectric Materials and Devices
- Type
- article
- Field-Weighted Citation Impact
- 6.79
Funders
- National Natural Science Foundation of China
- Shenzhen University
- Australian Research Council
- Institute for Future Environments, Queensland University of Technology
- Basic and Applied Basic Research Foundation of Guangdong Province