3 years ago

Thermoelectric Performance of Se/Cd Codoped SnTe via Microwave Solvothermal Method

Thermoelectric Performance of Se/Cd Codoped SnTe via Microwave Solvothermal Method
Peng-peng Bai, Wenlin Cui, Zhi-Gang Chen, Siyi Chang, Lijun Wang, Luo Yue, Teng Fang, Shuqi Zheng
Extensive attention has been focused on thermoelectric performance optimization of SnTe because of its potential in waste heat recovery. Here, we fabricate high thermoelectric performance Se/Cd codoped SnTe octahedral particles by microwave-stimulated solvothermal method. The SnTe-based octahedral particles have sizes ranging from several micrometers to hundreds of nanometers, forming dense bulks after spark plasma sintering. Combined with the strong point defect scattering by Se and Cd dopants, a low thermal conductivity of 1.8 W m–1 K–1 at 773 K is obtained in the Se/Cd codoped Sn0.98Cd0.02Te0.9Se0.1 sample. Se and Cd dopants can optimize the band structure of SnTe and boost the power factors, resulting in a promising peak ZT of ∼0.78 at 773 K in the Se/Cd codoped Sn0.98Cd0.02Te0.9Se0.1 sample, which is significantly higher than those of undoped SnTe and Se-doped SnTe samples.

Publisher URL: http://dx.doi.org/10.1021/acsami.7b06083

DOI: 10.1021/acsami.7b06083

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.