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DOI	10.1039/c7ee01510k
	Phonon-glass electron-crystal behaviour by A site disorder in n-type thermoelectric oxides
	Daniels L.M.; Savvin S.N.; Pitcher M.J.; Dyer M.S.; Claridge J.B.; Ling S.; Slater B.; Corà F.; Alaria J.; Rosseinsky M.J.
发表日期	2017
ISSN	17545692
起始页码	1917
结束页码	1922
卷号	10 期号:9
英文摘要	Phonon-glass electron-crystal (PGEC) behaviour is realised in La0.5Na0.5Ti1-xNbxO3 thermoelectric oxides. The vibrational disorder imposed by the presence of both La3+ and Na+ cations on the A site of the ABO3 perovskite oxide La0.5Na0.5TiO3 produces a phonon-glass with a thermal conductivity, κ, 80% lower than that of SrTiO3 at room temperature. Unlike other state-of-the-art thermoelectric oxides, where there is strong coupling of κ to the electronic power factor, the electronic transport of these materials can be optimised independently of the thermal transport through cation substitution at the octahedral B site. The low κ of the phonon-glass parent is retained across the La0.5Na0.5Ti1-xNbxO3 series without disrupting the electronic conductivity, affording PGEC behaviour in oxides. © 2017 The Royal Society of Chemistry.
英文关键词	Glass; Phonons; Positive ions; Thermoelectricity; ABO3 perovskites; Cation substitutions; Electronic conductivity; Electronic power factor; Electronic transport; Phonon-glass electron-crystals; Thermal transport; Thermoelectric oxides; Thermal conductivity; crystal; electrical conductivity; electron; glass; optimization; oxide group; perovskite; substitution; temperature; vibration
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190412
作者单位	Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, United Kingdom; Department of Chemistry, University College London, Gower Street, London, WC1E 6BT, United Kingdom; Department of Physics, University of Liverpool, Oxford Street, Liverpool, L69 7ZE, United Kingdom
推荐引用方式 GB/T 7714	Daniels L.M.,Savvin S.N.,Pitcher M.J.,et al. Phonon-glass electron-crystal behaviour by A site disorder in n-type thermoelectric oxides[J],2017,10(9).
APA	Daniels L.M..,Savvin S.N..,Pitcher M.J..,Dyer M.S..,Claridge J.B..,...&Rosseinsky M.J..(2017).Phonon-glass electron-crystal behaviour by A site disorder in n-type thermoelectric oxides.Energy & Environmental Science,10(9).
MLA	Daniels L.M.,et al."Phonon-glass electron-crystal behaviour by A site disorder in n-type thermoelectric oxides".Energy & Environmental Science 10.9(2017).