Low Thermal Conductivity in Heteroanionic Materials with Layers of Homoleptic Polyhedra

Autor:	Chi Zhang, Jiangang He, Rebecca McClain, Hongyao Xie, Songting Cai, Lauren N. Walters, Jiahong Shen, Fenghua Ding, Xiuquan Zhou, Christos D. Malliakas, James M. Rondinelli, Mercouri G. Kanatzidis, Chris Wolverton, Vinayak P. Dravid, Kenneth R. Poeppelmeier
Rok vydání:	2022
Předmět:	Colloid and Surface Chemistry General Chemistry Biochemistry Catalysis
Zdroj:	Journal of the American Chemical Society. 144:2569-2579
ISSN:	1520-5126 0002-7863
Popis:	Although BiAgOSe, an analogue of a well-studied thermoelectric material BiCuOSe, is thermodynamically stable, its synthesis is complicated by the low driving force of formation from the stable binary and ternary intermediates. Here we have developed a "subtraction strategy" to suppress byproducts and produce pure phase BiAgOSe using hydrothermal methods. Electronic structure calculations and optical characterization show that BiAgOSe is an indirect bandgap semiconductor with a bandgap of 0.95 eV. The prepared sample exhibits lower lattice thermal conductivities (0.61 W·m
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::38c6d710a47ccb7fec223494820148b0 https://doi.org/10.1021/jacs.1c10284 Zobrazit plný text záznamu