Work

Enhanced thermoelectricity by controlled local structure in bismuth-chalcogenides

Year: 2019

Type: article

Abstract: Spectroscopic techniques, including photoelectron spectroscopy, diffuse reflectance, and x-ray absorption, are used to investigate the electronic structure and the local structure of LaOBiS2−xSex thermoelectric material. It is found that Se substitution effectively suppresses local distortion that can be responsible for the increased carrier mobility together with a change in the electronic structure. The results suggest a possible way to control thermoelectric properties by tuning of the local crystal structure of these materials.

Source: Journal of Applied Physics

DOI: 10.1063/1.5087096

Authors: K. Terashima, Y. Yano, E. Paris, Y. Goto, Y. Mizuguchi, Y. Kamihara, T. Wakita, Y. Muraoka, N. L. Saini, T. Yokoya

Institutions: Research Institute for Interdisciplinary Science, Okayama University, Okayama University, Sapienza University of Rome, Tokyo Metropolitan University, Keio University

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funders: European Synchrotron Radiation Facility, Ministry of Education, Culture, Sports, Science and Technology, Sapienza Università di Roma, Japan Society for the Promotion of Science

Awards: Development of super multilayer oxide films with ruitle structure by spinodal decomposition toward high power solar cell, G2898064642, G3928749867, Clarification of the correlation between functionality and chemical pressure in BiCh2-based compounds, G5100733234, Electronic structure of new BiS2 based layered superconductor studied by multi-mode photoemission spectroscopy, G8496221706

OpenAlex ID: W2924297241

FWCI: 0.509

Cites: 37

Cited by: 7

Related to: 10