Manipulating Band Structure through Reconstruction of Binary Metal Sulfide for High-Performance Thermoelectrics in Solution-Synthesized Nanostructured Bi13S18I2

Biao Xu, Tianli Feng, Matthias T. Agne, Qing Tan, Zhe Li, Kazuki Imasato, Lin Zhou, Je Hyeong Bahk, Xiulin Ruan, G. Jeffery Snyder, Yue Wu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Reconstructing canonical binary compounds by inserting a third agent can significantly modify their electronic and phonon structures. Therefore, it has inspired the semiconductor communities in various fields. Introducing this paradigm will potentially revolutionize thermoelectrics as well. Using a solution synthesis, Bi2S3 was rebuilt by adding disordered Bi and weakly bonded I. These new structural motifs and the altered crystal symmetry induce prominent changes in electrical and thermal transport, resulting in a great enhancement of the figure of merit. The as-obtained nanostructured Bi13S18I2 is the first non-toxic, cost-efficient, and solution-processable n-type material with z T=1.0.

Original languageEnglish (US)
Pages (from-to)2413-2418
Number of pages6
JournalAngewandte Chemie - International Edition
Volume57
Issue number9
DOIs
StatePublished - Feb 23 2018

Keywords

  • band structures
  • bismuth
  • iodide
  • metal sulfides
  • thermoelectric

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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