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• W4214604908 endingPage "4456" @default.
• W4214604908 startingPage "4448" @default.
• W4214604908 abstract "Thermoelectric (TE) materials with rattling model show ultralow lattice thermal conductivity for high-efficient energy conversion between heat and electricity. In this work, by analysis of the key spirit of the rattling model, we propose an efficient empirical descriptor to realize the high-throughput screening of ultralow thermal conductivity in a series of semiconductors. This descriptor extracts the structural information of rattling atoms whose bond lengths with all the nearest neighboring atoms are larger than the sum of corresponding covalent radiuses. We obtain 1171 candidates from the Materials Project (MP) Database that contains more than 100 000 materials. Combining the empirical equation of high-throughput computation with a machine learning algorithm, we compute the approximate lattice thermal conductivities (κL) and find the κL values of 532 materials are less than 2.0 W m-1 K-1 at 300 K, which can be regarded as the criteria of ultralow κL in general. In particular, we demonstrate that halide double perovskites structures show ultralow κL, which provides valuable references for promising low κL materials in future experiments. In order to further verify our computational results, we calculate accurate κL for Rb2SnBr6 and CsCu3O2 as candidates with the low lattice thermal conductivity by solving the phonon Boltzmann transport equation. In particular, we demonstrate that Rb2SnBr6 has the lowest κL value of 0.1 W m-1 K-1 at 300 K of all known thermal conductivity materials with the rattling model so far." @default.
• W4214604908 created "2022-03-02" @default.
• W4214604908 creator A5059515778 @default.
• W4214604908 creator A5062582935 @default.
• W4214604908 creator A5072134086 @default.
• W4214604908 date "2022-03-01" @default.
• W4214604908 modified "2023-10-18" @default.
• W4214604908 title "High-Throughput Screening of Rattling-Induced Ultralow Lattice Thermal Conductivity in Semiconductors" @default.
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• W4214604908 doi "https://doi.org/10.1021/jacs.1c11887" @default.
• W4214604908 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35230828" @default.
• W4214604908 hasPublicationYear "2022" @default.

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