Synthesis, crystal structure, and transport properties of quaternary tetrahedral chalcogenides

2015 ◽  
Vol 3 (40) ◽  
pp. 10436-10441 ◽  
Author(s):  
Yongkwan Dong ◽  
Lukasz Wojtas ◽  
Joshua Martin ◽  
George S. Nolas
Keyword(s):  
Crystal Structure ◽  
Solid Solution ◽  
Transport Properties ◽  
Material System ◽  
System P

The synthesis, crystal structure, and transport properties of quaternary tetrahedral chalcogenides Cu2.1Fe0.9SnSe4, Cu2.2Fe0.8SnSe4 and Cu2.2Zn0.2Fe0.6SnSe4 were investigated. Cu2.2Fe0.8SnSe4 has a ZT value of 0.45 at 750 K, the highest ZT thus far reported at this temperature for solid–solution compositions in this material system.

Synthesis, crystal structure, and transport properties of Cu2.2Zn0.8SnSe4−xTex (0.1 ≤ x ≤ 0.4)

2015 ◽  
Vol 44 (19) ◽  
pp. 9014-9019 ◽  
Author(s):  
Yongkwan Dong ◽  
Brian Eckert ◽  
Hsin Wang ◽  
Xiaoyu Zeng ◽  
Terry M. Tritt ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Solid Solution ◽  
Transport Properties ◽  
Material System ◽  
System P

The synthesis, crystal structure and transport properties of Cu2.xZn0.8SnSe4−xTex (x = 0.1–0.4) series were investigated. Cu2.2Zn0.8SnSe3.7Te0.3 has a ZT value of 0.56 at 700 K, the highest ZT value thus far reported for solid-solution compositions in this material system.

Two-dimensional metal NaCu6.3Sb3and solid-state transformations of sodium copper antimonides

2017 ◽  
Vol 46 (37) ◽  
pp. 12438-12445 ◽  
Author(s):  
B. Owens-Baird ◽  
S. Lee ◽  
K. Kovnir
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Transport Properties ◽  
Two Dimensional ◽  
System P

Synthesis, crystal structure, and transport properties of a novel two-dimensional metal, NaCu6.3Sb3, are reported together with the solid-state transformations observed within the Na–Cu–Sb system.

scholarly journals Effect of high pressure on the crystal structure and charge transport properties of the (2-fluoro-3-pyridyl)(4-iodophenyl)borinic 8-oxyquinolinate complex

CrystEngComm ◽  
2014 ◽  
Vol 16 (47) ◽  
pp. 10780-10790 ◽  
Author(s):  
Grzegorz Wesela-Bauman ◽  
Simon Parsons ◽  
Janusz Serwatowski ◽  
Krzysztof Woźniak
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
Charge Transport ◽  
Transport Properties ◽  
System P

Compression of the crystal structure and its impact on the charge transport properties of a model borinic quinolinate system.

scholarly journals Fabrication, micro-structure characteristics and transport properties of co-evaporated thin films of Bi2Te3 on AlN coated stainless steel foils

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Aziz Ahmed ◽  
Seungwoo Han
Keyword(s):  
Thin Film ◽  
Crystal Structure ◽  
Thin Films ◽  
Stainless Steel ◽  
Substrate Temperature ◽  
Transport Properties ◽  
Structural Defects ◽  
Film Composition ◽  
High Substrate ◽  
Foil Substrate

AbstractN-type bismuth telluride (Bi2Te3) thin films were prepared on an aluminum nitride (AlN)-coated stainless steel foil substrate to obtain optimal thermoelectric performance. The thermal co-evaporation method was adopted so that we could vary the thin film composition, enabling us to investigate the relationship between the film composition, microstructure, crystal preferred orientation and thermoelectric properties. The influence of the substrate temperature was also investigated by synthesizing two sets of thin film samples; in one set the substrate was kept at room temperature (RT) while in the other set the substrate was maintained at a high temperature, of 300 °C, during deposition. The samples deposited at RT were amorphous in the as-deposited state and therefore were annealed at 280 °C to promote crystallization and phase development. The electrical resistivity and Seebeck coefficient were measured and the results were interpreted. Both the transport properties and crystal structure were observed to be strongly affected by non-stoichiometry and the choice of substrate temperature. We observed columnar microstructures with hexagonal grains and a multi-oriented crystal structure for the thin films deposited at high substrate temperatures, whereas highly (00 l) textured thin films with columns consisting of in-plane layers were fabricated from the stoichiometric annealed thin film samples originally synthesized at RT. Special emphasis was placed on examining the nature of tellurium (Te) atom based structural defects and their influence on thin film properties. We report maximum power factor (PF) of 1.35 mW/m K2 for near-stoichiometric film deposited at high substrate temperature, which was the highest among all studied cases.

Crystal structure of U1-yLnyO2-x (Ln = Gd, Er) solid solution

2021 ◽  
pp. 153189
Author(s):  
Pham Van Mao ◽  
Tatsumi Arima ◽  
Yaohiro Inagaki ◽  
Kazuya Idemitsu ◽  
Daisuke Akiyama ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Solid Solution

scholarly journals Study of anisotropic thermal conductivity in textured thermoelectric alloys by Raman spectroscopy

RSC Advances ◽  
2021 ◽  
Vol 11 (39) ◽  
pp. 24456-24465
Author(s):  
Rapaka S. C. Bose ◽  
K. Ramesh
Keyword(s):  
Crystal Structure ◽  
Thermal Conductivity ◽  
Raman Spectroscopy ◽  
Transport Properties ◽  
Thermal Transport ◽  
Layered Crystal ◽  
Layered Crystal Structure ◽  
Thermal Transport Properties ◽  
Anisotropic Thermal Conductivity ◽  
P Type

Polycrystalline p-type Sb1.5Bi0.5Te3 (SBT) and n-type Bi2Te2.7Se0.3 (BTS) compounds possessing layered crystal structure show anisotropic electronic and thermal transport properties.

scholarly journals Structure and Transport Properties of the BiCuSeO-BiCuSO Solid Solution

Materials ◽  
2015 ◽  
Vol 8 (3) ◽  
pp. 1043-1058 ◽  
Author(s):  
David Berardan ◽  
Jing Li ◽  
Emilie Amzallag ◽  
Sunanda Mitra ◽  
Jiehe Sui ◽  
...  
Keyword(s):  
Solid Solution ◽  
Transport Properties
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