title: Ba5Cu8In2S12: a quaternary semiconductor with a unique 3D copper-rich framework and ultralow thermal conductivity.
abstract: A novel quaternary sulfide, Ba5Cu8In2S12(1), has been successfully synthesized via a high-temperature solid-state reaction. It contains Cu8S10S4/2clusters as basic building blocks, which are connected to one another by discrete In3+ions to generate a 3D copper-rich framework, where the Ba2+cations reside. Interestingly, such large clusters that are fused by five crystallographically independent Cu sites with three different chemical environments result in the increase of phonon scattering, which is the crucial factor to the exceptionally low lattice thermal conductivity (ca. 0.28 W m-1K-1at 773 K) in 1.
authors.affiliation: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China and Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China. liming_wu@fjirsm.ac.cn.
authors.forename: Hua
authors.initials: H
authors.lastname: Lin
authors.affiliation: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China and Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China. liming_wu@fjirsm.ac.cn.
authors.forename: Hong
authors.initials: H
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China and Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China. liming_wu@fjirsm.ac.cn and University of Chinese Academy of Sciences, Beijing 100039, People's Republic of China.
authors.forename: Yu-Jun
authors.initials: YJ
authors.lastname: Zheng
authors.affiliation: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China and Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China. liming_wu@fjirsm.ac.cn.
authors.forename: Yu-Kun
authors.initials: YK
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China and Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China. liming_wu@fjirsm.ac.cn and University of Chinese Academy of Sciences, Beijing 100039, People's Republic of China.
authors.forename: Ju-Song
authors.initials: JS
authors.lastname: Yu
authors.affiliation: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China and Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China. liming_wu@fjirsm.ac.cn.
authors.forename: Li-Ming
authors.identifier: http://orcid.org/0000-0002-3464-6032
authors.initials: LM
authors.lastname: Wu