Amorphous/epitaxial superlattice for thermoelectric application

• Akihiro Ishida

• Hoang Thi Xuan Thao

• Mamoru Shibata

• Seisuke Nakashima

• Hirokazu Tatsuoka

• Hidenari Yamamoto

• Yohei Kinoshita

• Mamoru Ishikiriyama

• Yoshiaki Nakamura

Abstract

An amorphous/epitaxial superlattice system is proposed for application to thermoelectric devices, and the superlattice based on a PbGeTeS system was prepared by the alternate deposition of PbS and GeTe using a hot wall epitaxy technique. The structure was analyzed by high-resolution transmission electron microscopy (HRTEM) and X-ray analysis, and it was found that the superlattice consists of an epitaxial PbTe-based layer and a GeS-based amorphous layer by the reconstruction of the constituents. A reduction in thermal conductivity due to the amorphous/epitaxial system was confirmed by a 2ω method. Electrical and thermoelectric properties were measured for the samples.

Journal

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 55 (8), 081201-, 2016-07-05

  IOP Publishing

Keywords

• General Physics and Astronomy
• General Engineering

Details

• CRID: 1360284924867399936
• NII Article ID: 210000146925
• DOI: 10.7567/jjap.55.081201
• ISSN: 13474065
• ISSN: 00214922
• Web Site: http://stacks.iop.org/1347-4065/55/i=8/a=081201/pdf
• Web Site: http://stacks.iop.org/1347-4065/55/i=8/a=081201?key=crossref.16dfa6d3756130af99f45cadcf103e43
• Web Site: https://iopscience.iop.org/article/10.7567/JJAP.55.081201
• Web Site: https://iopscience.iop.org/article/10.7567/JJAP.55.081201/pdf
• Data Source:
  • Crossref
  • CiNii Articles
  • KAKEN