Quaternary chalcogenides: Promising thermoelectric material and recent progress
Sign Up to like & getrecommendations! Published in 2019 at "Science China Materials"
DOI: 10.1007/s40843-019-9467-2
Abstract: 热电材料利用Seebeck与Pelitier效应可以实现热能和电能的相互转化, 是颇具潜力的新型功能材料. 本文聚焦四元硫属化合物 Cu 2 B II C IV Se 4 (其中, B位为Zn, Cd, Mn, Hg, C位为Si, Ge, Sn)的热电性能. 此类材料具有复杂的晶格结构, 导致其具有较低的晶格热导率, 是一类具有本征低热导的热电材料. 本文系统地总结了各类优化四元硫属化合物电学及热学的方法. 首先, 非化学计量法、 元素掺杂和 η =1定理用于改善其电学性能. 然后, 纳米结构工程可用于进一步降低其热导率. 最后, 基于文中的论述, 我们提出通过多种实验方法的结合使用, 协同调控四元硫属化合物的电、 热性能,… read more here.
Keywords: thermoelectric material; material recent; chalcogenides promising; promising thermoelectric ... See more keywords
Synthesis and transport properties of Cu-excess Cu(Zn,Cd)2InTe4 quaternary chalcogenides
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Alloys and Compounds"
DOI: 10.1016/j.jallcom.2018.02.030
Abstract: Abstract Polycrystalline quaternary chalcogenides with compositions Cu1.1Cd1.8In1.1Te4, Cu1.3Cd1.9In0.8Te4, Cu1.2Zn1.8InTe4 and Cu1.2Zn1.6In1.2Te4 were synthesized by reacting the constituent elements and subsequent solid state annealing followed by densification by hot-pressing in order to investigate the transport properties… read more here.
Keywords: synthesis transport; transport properties; thermal conductivity; quaternary chalcogenides ... See more keywords
Four new quaternary chalcogenides A2Ba7Sn4Q16 (A = Li, Na; Q = S, Se): syntheses, crystal structures determination, nonlinear optical performances investigation
Sign Up to like & getrecommendations! Published in 2018 at "New Journal of Chemistry"
DOI: 10.1039/c7nj04288d
Abstract: Four new quaternary chalcogenides A2Ba7Sn4Q16 (A = Li, Na; Q = S, Se) were successfully synthesized in vacuum-sealed silica tubes for the first time. All of them crystallize in the noncentrosymmetric (NCS) cubic I3d space… read more here.
Keywords: chalcogenides a2ba7sn4q16; four new; syntheses crystal; new quaternary ... See more keywords
Synthesis, structure, electronic and thermal properties of sphalerite CuZn2InS4.
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DOI: 10.1039/d1dt03218f
Abstract: Quaternary chalcogenides continue to be of interest due to the variety of physical properties they possess, as well as their potential for different applications of interest. Investigations on materials with the sphalerite crystal structure have… read more here.
Keywords: electronic thermal; structure electronic; synthesis structure; thermal properties ... See more keywords
Electronic structure properties of CuZn2InTe4 and AgZn2InTe4 quaternary chalcogenides
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Applied Physics"
DOI: 10.1063/1.5094628
Abstract: Quaternary chalcogenides composed of earth-abundant and primarily nontoxic constituents are currently being explored for thermoelectric applications. The representatives of this class, CuZn2InTe4 and AgZn2InTe4, have been synthesized, and here, we present a comparative study of… read more here.
Keywords: cuzn2inte4 agzn2inte4; properties cuzn2inte4; electronic structure; structure ... See more keywords