Results 11 to 20 of about 596 (173)

Multifaceted Roles of Tantalum in Promoting the Thermoelectric Performance of Mg3(Sb,Bi)2 Based Materials

open access: yesAdvanced Science
Mg3(Sb,Bi)2 has emerged as one of the most promising thermoelectric materials with the potential to complement commercial bismuth telluride. However, its performance is still hindered by pronounced carrier grain‐boundary scattering, relatively high ...
Guangmeng You   +9 more
doaj   +2 more sources

Higher thermoelectric performance of Zintl phases (Eu 0.5 Yb 0.5 ) 1−x Ca x Mg 2 Bi 2 by band engineering and strain fluctuation [PDF]

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2016
Zhifeng Ren, Zihang Liu, Huiyuan Geng
exaly   +2 more sources

Enhanced thermoelectric performance in the zintl antimonides (Ca,RE)9Cd4Sb9 (RE = rare-earth metal). Synergy between increased structural complexity and drive towards optimized chemical bonding

open access: yesMaterials Today Advances, 2022
The interplay of structural complexity, high carrier mobility, and high density of states effective mass can play a pivotal role in achieving enhanced thermoelectric (TE) performance in candidate materials.
M.O. Ogunbunmi, S. Baranets, S. Bobev
doaj   +1 more source

Structures of Three Alkaline-Earth Metal Germanides Refined from Single-Crystal X-ray Diffraction Data

open access: yesChemistry, 2022
The calcium- and strontium- alumo-germanides SrxCa1–xAl2Ge2 (x ≈ 0.4) and SrAl2Ge2 have been synthesized and structurally characterized. Additionally, a binary calcium germanide CaGe has also been identified as a byproduct.
Nian-Tzu Suen, Svilen Bobev
doaj   +1 more source

Synthesis and Crystal Structure of the Zintl Phases Na2CaCdSb2, Na2SrCdSb2 and Na2EuCdSb2

open access: yesInorganics, 2022
This work details the synthesis and the crystal structures of the quaternary Zintl phases Na2CaCdSb2, Na2SrCdSb2 and Na2EuCdSb2. They are isostructural and their noncentrosymmetric structure is with the space group Pmc21 (Pearson code oP12).
Bayram Saparov, Svilen Bobev
doaj   +1 more source

Zintl phases for thermoelectric devices [PDF]

open access: yesDalton Transactions, 2007
By converting waste heat into electricity and improving the efficiency of refrigeration systems, thermoelectric devices could play a significant role in solving today's energy problems. Increasing the thermoelectric efficiency (as measured by the thermoelectric material's figure-of-merit, zT) is critical to the development of this technology.
Kauzlarich, Susan M.   +2 more
openaire   +3 more sources

Synthesis and Crystal and Electronic Structures of the Zintl Phase Sr21Cd4Sb18

open access: yesSolids, 2023
Reported herein are the synthesis and crystal chemistry analysis of the Zintl phase Sr21Cd4Sb18. Single crystals of this compound were grown using the Sn-flux method, and structural characterization was carried out using single-crystal X-ray diffraction.
Kowsik Ghosh, Svilen Bobev
doaj   +1 more source

Improved figure of merit (z) at low temperatures for superior thermoelectric cooling in Mg3(Bi,Sb)2

open access: yesNature Communications, 2023
The low-temperature thermoelectric performance of Bi-rich n-type Mg3(Bi,Sb)2 was limited by the electron transport scattering at grain boundaries, while removing grain boundaries and bulk crystal growth of Mg-based Zintl phases are challenging due to the
Nan Chen   +11 more
doaj   +1 more source

Synthesis and Characterization of NaCd0.92Sn1.08, Na(Cd0.28Sn0.72)2 and Na2CdSn5 with Three-Dimensional Cd-Sn Frameworks

open access: yesInorganics, 2021
The crystal structures of three new ternary compounds, NaCd0.92Sn1.08 (I), Na(Cd0.28Sn0.72)2 (II), and Na2CdSn5 (III) synthesized in a sodium-cadmium-tin system were determined by single-crystal X-ray analysis to be the following: (I) LiGeZn-type ...
Yuki Asamiya   +2 more
doaj   +1 more source

Ba5Sb8: The Highest Homologue of the Family of Binary Semiconducting Barium Antimonides BanSb2n−2 (n ≥ 2)

open access: yesInorganics, 2023
A novel binary compound within the Ba–Sb phase diagram, Ba5Sb8, was synthesized by combining elements with an excess of Sb in an alumina crucible. Structural elucidation was performed using single-crystal X-ray diffraction.
S. M. Gayomi K. Samarakoon   +3 more
doaj   +1 more source

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