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Flow-assisted Dielectrophoresis: A Low Cost Method for the Fabrication of High Performance Solution-processable Nanowire Devices
Published on: December 7, 2017
Solution-liquid-solid (SLS) growth of silicon nanowires.
Andrew T Heitsch1, Dayne D Fanfair, Hsing-Yu Tuan
1Department of Chemical Engineering, Texas Materials Institute, and Center for Nano- and Molecular Science and Technology, The University of Texas at Austin, Austin, Texas 78712-1062, USA.
Researchers developed a new method for synthesizing silicon (Si) nanowires using a solution-liquid-solid approach. This cost-effective, atmospheric pressure technique yields large quantities of crystalline Si nanowires, advancing nanomaterial production.
Area of Science:
- Materials Science
- Nanotechnology
- Chemical Synthesis
Background:
- Silicon nanowires are crucial for advanced electronics and energy applications.
- Existing synthesis methods often require high temperatures or complex setups.
- Developing scalable and cost-effective synthesis routes is essential.
Purpose of the Study:
- To report a novel solution-liquid-solid (SLS) synthesis of silicon (Si) nanowires.
- To establish a colloidal synthetic route at atmospheric pressure.
- To achieve large-scale production of crystalline Si nanowires.
Main Methods:
- Decomposition of trisilane (Si3H8) in high-boiling point solvents like octacosane or squalane.
- Utilizing gold (Au) or bismuth (Bi) nanocrystals as catalysts.
- Carrying out the synthesis in a solvent medium at atmospheric pressure.
Main Results:
- Successful synthesis of crystalline silicon (Si) nanowires via the SLS method.
- Demonstration of a colloidal synthesis route at atmospheric pressure.
- Achieved large-scale production of Si nanowires.
Conclusions:
- The reported SLS synthesis offers a scalable and efficient method for producing crystalline Si nanowires.
- This technique overcomes limitations of previous synthesis methods, enabling broader applications.
- The process is suitable for industrial-scale production of silicon nanomaterials.
