Synthesis and physical properties of single-crystalline InTe: Towards high thermoelectric performance

2021 ◽  
Author(s):  
Shantanu Misra ◽  
Petr Levinsky ◽  
Anne Dauscher ◽  
ghouti medjahdi ◽  
Jiri Hejtmanek ◽  
...  
Keyword(s):  
Power Generation ◽  
Physical Properties ◽  
Broad Class ◽  
Thermoelectric Performance ◽  
Single Crystalline ◽  
Chalcogenide Semiconductors

Chalcogenide semiconductors and semimetals continue to be of prime interest for thermoelectric applications in power generation. As another representative of this broad class of materials, tetragonal InTe has recently emerged...

scholarly journals Structural and physical properties of 99 complex bulk chalcogenides crystals using first-principles calculations

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sahib Hasan ◽  
Khagendra Baral ◽  
Neng Li ◽  
Wai-Yim Ching
Keyword(s):  
Mechanical Properties ◽  
Physical Properties ◽  
First Principles ◽  
Experimental Studies ◽  
First Principles Calculations ◽  
Chalcogenide Semiconductors ◽  
Optical And Mechanical Properties ◽  
Very Large Database ◽  
Unique Composition ◽  
Fundamental Physical

AbstractChalcogenide semiconductors and glasses have many applications in the civil and military fields, especially in relation to their electronic, optical and mechanical properties for energy conversion and in enviormental materials. However, they are much less systemically studied and their fundamental physical properties for a large class chalcogenide semiconductors are rather scattered and incomplete. Here, we present a detailed study using well defined first-principles calculations on the electronic structure, interatomic bonding, optical, and mechanical properties for 99 bulk chalcogenides including thirteen of these crytals which have never been calculated. Due to their unique composition and structures, these 99 bulk chalcogenides are divided into two main groups. The first group contains 54 quaternary crystals with the structure composition (A2BCQ4) (A = Ag, Cu; B = Zn, Cd, Hg, Mg, Sr, Ba; C = Si, Ge, Sn; Q = S, Se, Te), while the second group contains scattered ternary and quaternary chalcogenide crystals with a more diverse composition (AxByCzQn) (A = Ag, Cu, Ba, Cs, Li, Tl, K, Lu, Sr; B = Zn, Cd, Hg, Al, Ga, In, P, As, La, Lu, Pb, Cu, Ag; C = Si, Ge, Sn, As, Sb, Bi, Zr, Hf, Ga, In; Q = S, Se, Te; $$\hbox {x} = 1$$ x = 1 , 2, 3; $$\hbox {y} = 0$$ y = 0 , 1, 2, 5; $$\hbox {z} = 0$$ z = 0 , 1, 2 and $$\hbox {n} = 3$$ n = 3 , 4, 5, 6, 9). Moreover, the total bond order density (TBOD) is used as a single quantum mechanical metric to characterize the internal cohesion of these crystals enabling us to correlate them with the calculated properties, especially their mechanical properties. This work provides a very large database for bulk chalcogenides crucial for the future theoretical and experimental studies, opening opportunities for study the properties and potential application of a wide variety of chalcogenides.

High efficiency GeTe-based materials and modules for thermoelectric power generation

2021 ◽  
Author(s):  
Tong Xing ◽  
Qingfeng Song ◽  
Pengfei Qiu ◽  
Qihao Zhang ◽  
Ming Gu ◽  
...  
Keyword(s):  
Power Generation ◽  
Thermoelectric Power ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
High Efficiency ◽  
Waste Heat ◽  
Thermoelectric Performance ◽  
Thermoelectric Generators ◽  
Thermoelectric Power Generation

GeTe-based materials have a great potential to be used in thermoelectric generators for waste heat recovery due to their excellent thermoelectric performance, but their module research is greatly lagging behind...

scholarly journals Benchmark characterization of the thermoelectric properties of individual single-crystalline CdS nanowires by a H-type sensor

RSC Advances ◽  
2017 ◽  
Vol 7 (41) ◽  
pp. 25298-25304 ◽  
Author(s):  
Haidong Wang ◽  
Dingshan Zheng ◽  
Xing Zhang ◽  
Hiroshi Takamatsu ◽  
Weida Hu
Keyword(s):  
Thermoelectric Properties ◽  
Thermoelectric Performance ◽  
Single Crystalline ◽  
Cds Nanowires ◽  
First Time

A precision H-type sensor method has been developed to measure the thermoelectric performance of individual single-crystalline CdS nanowires for the first time.

scholarly journals Low-Temperature Physical Properties of Single-Crystalline EuCoGe3and EuRhGe3

2015 ◽  
Vol 127 (2) ◽  
pp. 418-420 ◽  
Author(s):  
O. Bednarchuk ◽  
D. Kaczorowski
Keyword(s):  
Low Temperature ◽  
Physical Properties ◽  
Single Crystalline

Hard Template Synthesis of Mesoporous and Nanocrystalline Alkali Metal Niobates with Enhanced Photocatalytic Performance

2013 ◽  
Vol 367 ◽  
pp. 12-15
Author(s):  
Qing Li ◽  
Li Ya Wang ◽  
Xiu Kai Li
Keyword(s):  
Solid State ◽  
Alkali Metal ◽  
Physical Properties ◽  
Template Synthesis ◽  
Solid State Reaction ◽  
Alkali Metals ◽  
Photocatalytic Performance ◽  
Hard Template ◽  
Single Crystalline

A nanocasting method using SBA-15 as a hard template was adopted to prepare mesoporous nanocrystalline ANbO3 (A = Li, Na, and K) samples. The characteristics of samples werecharacterized by techniques such asXRD, N2-sorption measurement, HRTEM and UVDRS. It was found that thealkality of the alkali metals could have profound impacts on the synthesis andthe physical properties of samples. The Li, Na, and K precursors can reacteasily with the siliceous template, and the reactivity varies with the alkalityof the alkali metal. The synthesis of KNbO3 is unsuccessful because of the high alkality ofK. The templated LiNbO3 andNaNbO3 consist of single crystalline nanoparticles that generate interparticle mesoporosity. The LiNbO3andNaNbO3 samples showed notably enhanced photocatalytic activitiesfor 2-propanol photodegradation in comparison to the counterparts prepared bythe solid state reaction.

scholarly journals Physical properties of single-crystalline fibers of the colossal-magnetoresistance manganite La0.7Ca0.3MnO3

2003 ◽  
Vol 83 (15) ◽  
pp. 3135-3137 ◽  
Author(s):  
C. A. Cardoso ◽  
F. M. Araujo-Moreira ◽  
M. R. B. Andreeta ◽  
A. C. Hernandes ◽  
E. R. Leite ◽  
...  
Keyword(s):  
Physical Properties ◽  
Colossal Magnetoresistance ◽  
Single Crystalline

scholarly journals Understanding the asymmetrical thermoelectric performance for discovering promising thermoelectric materials

2019 ◽  
Vol 5 (6) ◽  
pp. eaav5813 ◽  
Author(s):  
Hangtian Zhu ◽  
Jun Mao ◽  
Zhenzhen Feng ◽  
Jifeng Sun ◽  
Qing Zhu ◽  
...  
Keyword(s):  
Power Generation ◽  
High Temperature ◽  
Thermoelectric Power ◽  
Conversion Efficiency ◽  
Thermoelectric Materials ◽  
The Other ◽  
Thermoelectric Performance ◽  
Cold Side ◽  
P Type ◽  
The Relationship

Thermoelectric modules, consisting of multiple pairs of n- and p-type legs, enable converting heat into electricity and vice versa. However, the thermoelectric performance is often asymmetrical, in that one type outperforms the other. In this paper, we identified the relationship between the asymmetrical thermoelectric performance and the weighted mobility ratio, a correlation that can help predict the thermoelectric performance of unreported materials. Here, a reasonably high ZT for the n-type ZrCoBi-based half-Heuslers is first predicted and then experimentally verified. A high peak ZT of ~1 at 973 K can be realized by ZrCo0.9Ni0.1Bi0.85Sb0.15. The measured heat-to-electricity conversion efficiency for the unicouple of ZrCoBi-based materials can be as high as ~10% at the cold-side temperature of ~303 K and at the hot-side temperature of ~983 K. Our work demonstrates that the ZrCoBi-based half-Heuslers are highly promising for the application of mid- and high-temperature thermoelectric power generation.

Physical Properties of Hydrophobic Epoxy-Based Silsesquioxane (EP-POSS) Photovoltaic Materials

2021 ◽  
Vol 16 (1) ◽  
pp. 11-16
Author(s):  
Yanhong Fang ◽  
Ping Wang ◽  
Lifang Sun ◽  
Linhong Wang
Keyword(s):  
Power Generation ◽  
Physical Properties ◽  
Flame Retardancy ◽  
Theoretical Foundation ◽  
Light Transmittance ◽  
Photovoltaic Panels ◽  
Photovoltaic Materials ◽  
Hydrophobic Materials ◽  
Weather Resistance ◽  
Hydrophobic Material

With the increasing application of photovoltaic panels in the field of power generation, hydrophobic materials have gradually received attention from researchers. Because EP-POSS (epoxy-based silsesquioxane) has many excellent properties, such as transparency, hydrophobicity, flame retardancy and weather resistance, it may be widely used in photovoltaic power generation boards in the future. Therefore, it is important to study the physical properties of EP-POSS. This article studies the physical properties of synthesized EP-POSS, such as the light transmittance, adhesion, flame retardancy, surface energy, and dielectric properties. The results prove that EP-POSS is a hydrophobic material that can be applied to photovoltaic panels. This work laid a theoretical foundation for the application of EP-POSS as a hydrophobic material to photovoltaic panels.

Enhanced thermoelectric performance of InTe through Pb doping

2021 ◽  
Author(s):  
Shantanu Misra ◽  
Adèle Léon ◽  
Petr Levinsky ◽  
Jiří Hejtmánek ◽  
Bertrand Lenoir ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Band Gap ◽  
Narrow Band ◽  
Thermoelectric Performance ◽  
Chalcogenide Semiconductors ◽  
Type Semiconductor ◽  
P Type ◽  
Pb Doping

Chalcogenide semiconductors continue to be of prime interest for designing novel efficient materials for energy-conversion applications. Among them, the narrow-band-gap p-type semiconductor InTe exhibits high thermoelectric performance that mostly stems...

Single-crystalline chromium silicide nanowires and their physical properties

nano Online ◽  
2016 ◽  
Author(s):  
Han-Fu Hsu ◽  
Ping-Chen Tsai ◽  
Kuo-Chang Lu
Keyword(s):  
Physical Properties ◽  
Single Crystalline ◽  
Chromium Silicide
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