Key Role of Positional Disorder and Soft Structural Framework for Lowering the Thermal Conductivity of Quaternary Ag1–xCu3+xTiSe4 (0 ≤ x ≤ 0.8) System to an Ultralow Limit
Achintya Lakshan,
Krishnendu Buxi,
Paribesh Acharyya
et al.
Abstract:Low thermal conductive semiconductors have attracted huge attention for heat management and heat harvesting applications. Although the weak chemical bonding in the Cu/Agbased chalcogenides is promising in suppressing heat transport, their quaternary analogs remain less explored. Here, we report on a comparative study of the crystal structure and thermal conductivity of various Ag-containing variants of Cu 4 TiSe 4 , i.e., Ag 1−x Cu 3+x TiSe 4 (x = 0−0.8) samples. Analysis of the crystal structure, phase transi… Show more
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