Självassisterade elektriska fält-effekt termoelektriska generatorer-SELFTEG

Tidsperiod: 2020-01-01 till 2023-12-31

Projektledare: Zhibin Zhang, Zhi-Bin Zhang

Medarbetare: Ngan Pham Hoang, Ya Hu, Libo Chen

Finansiär: Vetenskapsrådet

Bidragstyp: Projektbidrag

Budget: 3 600 000 SEK

The potential of a material used in thermoelectric generators (TEG) is characterized by the figure of merit ZT at a specific operating temperature T. ZT has surpassed barrier of around 1 mainly delivered by materials containing rare element telluride through reduction of lattice thermal conductivity via nanostructuring techniques. The best ZT values remain in around 0.1 to 0.6 for earth-abundant materials awaiting substantial improvement to reach 1. The mission of the project is to study and implement a new solution for groundbreaking enhancement of ZT of silicon based materials via a novel scheme of self-assisted gate-all-around field-effect modulation of thermoelectric transport in silicon nanowire arrays. The novelty in this scheme comprises gate-all-around electric field modulation on silicon nanowire arrays for power factor enhancement and triboelectric nanogenerator as self-assistance means for providing electrostatic electric field by harvesting mechanical energy from the surrounding. The research team consists of two female and two male researchers with strong and complementary competences required in this project. All necessary equipments are available in-house and collaborations relevant to the project have been built. The project is expected to generate new knowledge and novel technology enabling low-cost and high performance TEGs as power resource for low-power wearable electronics, distributed sensors and internet of things and cooler for miniaturized devices.