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Iodide Ion-Assisted Silver-Telluride-Based Nanowires: Morphology Optimization and Efficient Doping for Improved
Penglu Yu1, Mingxuan Li1, Wenqian Lv1
1State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, North Third Ring Road 15, Chaoyang District, Beijing, 100029, P. R. China.
Small (Weinheim an Der Bergstrasse, Germany)
|March 4, 2025
Summary
Researchers developed a new method using iodide ions to improve silver-telluride nanowire (STNW) films. This enhances thermoelectric performance and flexibility for room temperature applications.
Area of Science:
- Materials Science
- Nanotechnology
- Thermoelectrics
Background:
- Silver-telluride nanowires (STNWs) show promise for room temperature thermoelectric applications.
- Current research on doping and morphology optimization of STNWs is limited.
- Enhanced thermoelectric performance and flexibility are crucial for practical STNW applications.
Purpose of the Study:
- To develop a simple and efficient strategy for doping design and morphology optimization of STNWs.
- To significantly enhance both the thermoelectric performance and flexibility of STNW films.
- To demonstrate the potential of STNWs for practical applications through flexible device fabrication.
Main Methods:
- An iodide ion-assisted strategy was employed for doping and morphology control of STNWs.
- Iodide ions acted as both a process regulator and an effective dopant.
- Flexible thermoelectric composite films and devices were fabricated and evaluated.
Main Results:
- A 1.97-fold increase in the power factor of STNW films at room temperature was achieved.
- The iodide ion strategy promoted the formation of bundled STNW structures, enhancing film flexibility.
- Fabricated flexible TE composite films and devices demonstrated excellent potential.
Conclusions:
- The iodide ion-assisted strategy effectively enhances thermoelectric performance and flexibility of STNWs.
- This method offers a viable pathway for developing advanced STNW-based thermoelectric materials.
- The study provides valuable insights for synthesizing other nanostructured thermoelectric materials.
