Results 1 to 10 of about 2,110 (157)

A record thermoelectric efficiency in tellurium-free modules for low-grade waste heat recovery [PDF]

open access: yesNature Communications, 2022
Thermoelectric materials for low-grade heat recovery applications are limited to Bi2Te3-based alloys containing expensive Te for decades. Here, the authors demonstrate on a module level, cheap antimonides could enable an efficiency not inferior to that ...
Zhonglin Bu   +7 more
doaj   +2 more sources

Ab Initio Quantum-Mechanical Predictions of Semiconducting Photocathode Materials [PDF]

open access: yesMicromachines, 2021
Ab initio Quantum-Mechanical methods are well-established tools for material characterization and discovery in many technological areas. Recently, state-of-the-art approaches based on density-functional theory and many-body perturbation theory were ...
Caterina Cocchi   +1 more
doaj   +2 more sources

Anharmonic strong-coupling effects at the origin of the charge density wave in CsV3Sb5 [PDF]

open access: yesNature Communications
The formation of charge density waves is a long-standing open problem, particularly in dimensions higher than one. Various observations in the vanadium antimonides discovered recently further underpin this notion.
Ge He   +11 more
doaj   +2 more sources

Structural evolution in thermoelectric zinc antimonide thin films studied by in situ X-ray scattering techniques [PDF]

open access: yesIUCrJ, 2021
Zinc antimonides have been widely studied owing to their outstanding thermoelectric properties. Unlike in the bulk state, where various structurally unknown phases have been identified through their specific physical properties, a number of intermediate ...
Lirong Song   +6 more
doaj   +2 more sources

Operando X-ray scattering study of thermoelectric β-Zn4Sb3 [PDF]

open access: yesIUCrJ, 2020
The application of thermoelectrics for energy harvesting depends strongly on operational reliability and it is therefore desirable to investigate the structural integrity of materials under operating conditions.
Lasse Rabøl Jørgensen   +6 more
doaj   +2 more sources

Photonic Crystal Surface Emitting Diode Lasers with λ near 2 µm

open access: yesPhotonics, 2022
Epitaxially regrown electrically pumped photonic crystal surface emitting lasers (PCSELs) operating near 2 µm were designed and fabricated within a III-V-Sb material system.
Ruiyan Liu   +6 more
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

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

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

NOBLE METAL MINERALIZATION IN GABBROIDS OF THE KUMBA INTRUSIVE, THE URALIAN PLATINUM BELT (NORTH URALS) [PDF]

open access: yesМинералогия, 2022
The paper presents the first data on the distribution and composition of copper-noble metal mineralization in gabbroids of the Kumba intrusive (North Urals).
V.V. Mikhailov   +3 more
doaj   +1 more source

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