Synthesis, Crystallographic Studies, and Characterization of K 2Bi8Se13-xSx Solid Solutions

Theodora Kyratsi; Mercouri G. Kanatzidis

doi:10.1002/zaac.200300213

Synthesis, Crystallographic Studies, and Characterization of K ₂Bi₈Se_13-xS_x Solid Solutions

Theodora Kyratsi, Mercouri G. Kanatzidis

Northwestern University

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

The detailed crystal structures of selected members of solid solutions of the thermoelectric compounds K₂Bi₈Se_13-xS _x with x = 4, x = 6 and x = 10 were determined. The purpose of this study was to understand the nature of Se/S mass fluctuations introduced when β-K₂Bi₈Se₁₃ is alloyed with isostructural K₂Bi₈S₁₃. The details of the K/Bi disorder and Se/S distribution are examined. Lattice parameters, semiconducting band gaps and melting points are reported as function of x.

Original language	English
Pages (from-to)	2222-2228
Number of pages	7
Journal	Zeitschrift fur Anorganische und Allgemeine Chemie
Volume	629
Issue number	12-13
DOIs	https://doi.org/10.1002/zaac.200300213
Publication status	Published - Jan 1 2003

Keywords

Bismuth
Chalcogenides
Selenium
Thermoelectric properties

ASJC Scopus subject areas

Inorganic Chemistry

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10.1002/zaac.200300213

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AB - The detailed crystal structures of selected members of solid solutions of the thermoelectric compounds K2Bi8Se13-xS x with x = 4, x = 6 and x = 10 were determined. The purpose of this study was to understand the nature of Se/S mass fluctuations introduced when β-K2Bi8Se13 is alloyed with isostructural K2Bi8S13. The details of the K/Bi disorder and Se/S distribution are examined. Lattice parameters, semiconducting band gaps and melting points are reported as function of x.

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KW - Thermoelectric properties

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