scholarly journals High thermoelectric performance can be achieved in black phosphorus

2016 ◽  
Vol 4 (5) ◽  
pp. 991-998 ◽  
Author(s):  
J. Zhang ◽  
H. J. Liu ◽  
L. Cheng ◽  
J. Wei ◽  
J. H. Liang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Strong Evidence ◽  
Black Phosphorus ◽  
Thermoelectric Performance ◽  
Low Dimensional

TheZTof black phosphorus can be optimized to much higher value by appropriate isoelectronic substitution, giving strong evidence that high thermoelectric performance can be achieved without using complicated crystal structure or seeking for low-dimensional systems.

An insight into β-Zn4Sb3 from its crystal structure, thermoelectric performance, thermal stability and graded material

2017 ◽  
Vol 3 ◽  
pp. 72-83 ◽  
Author(s):  
Jian Yang ◽  
Guiwu Liu ◽  
Zhongqi Shi ◽  
Jianping Lin ◽  
Xiang Ma ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Thermal Stability ◽  
Thermoelectric Performance ◽  
Graded Material ◽  
Insight Into

Realizing High Thermoelectric Performance in p-Type SnSe through Crystal Structure Modification

2018 ◽  
Vol 141 (2) ◽  
pp. 1141-1149 ◽  
Author(s):  
Bingchao Qin ◽  
Dongyang Wang ◽  
Wenke He ◽  
Yang Zhang ◽  
Haijun Wu ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Thermoelectric Performance ◽  
Structure Modification ◽  
P Type

scholarly journals Hinge-like structure induced unusual properties of black phosphorus and new strategies to improve the thermoelectric performance

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Guangzhao Qin ◽  
Qing-Bo Yan ◽  
Zhenzhen Qin ◽  
Sheng-Ying Yue ◽  
Hui-Juan Cui ◽  
...  
Keyword(s):  
Black Phosphorus ◽  
Thermoelectric Performance ◽  
New Strategies

scholarly journals Silver vacancy concentration engineering leading to the ultralow lattice thermal conductivity and improved thermoelectric performance of Ag1-xInTe2

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Yaqiong Zhong ◽  
Yong Luo ◽  
Xie Li ◽  
Jiaolin Cui
Keyword(s):  
Crystal Structure ◽  
Thermal Conductivity ◽  
Electrical Conductivity ◽  
Point Defects ◽  
Lattice Thermal Conductivity ◽  
Vacancy Concentration ◽  
Antisite Defect ◽  
Thermoelectric Performance ◽  
Callaway Model

AbstractAgInTe2 compound has not received enough recognition in thermoelectrics, possibly due to the fact that the presence of Te vacancy (VTe) and antisite defect of In at Ag site (InAg) degrades its electrical conductivity. In this work, we prepared the Ag1-xInTe2 compounds with substoichiometric amounts of Ag and observed an ultralow lattice thermal conductivity (κL = 0.1 Wm−1K−1) for the sample at x = 0.15 and 814 K. This leads to more than 2-fold enhancement in the ZT value (ZT = 0.62) compared to the pristine AgInTe2. In addition, we have traced the origin of the untralow κL using the Callaway model. The results attained in this work suggest that the engineering of the silver vacancy (VAg) concentration is still an effective way to manipulate the thermoelectric performance of AgInTe2, realized by the increased point defects and modified crystal structure distortion as the VAg concentration increases.

La- and Lu-agardite – preparation, crystal structure, vibrational and magnetic properties

2020 ◽  
Vol 75 (1-2) ◽  
pp. 191-199
Author(s):  
Aleksandr M. Golubev ◽  
Eva Brücher ◽  
Armin Schulz ◽  
Reinhard K. Kremer ◽  
Robert Glaum
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Dft Calculations ◽  
Powder Diffraction ◽  
Hexagonal Structure ◽  
Water Molecules ◽  
X Ray ◽  
Bond Lengths ◽  
Inner Diameter ◽  
Low Dimensional

AbstractPolycrystalline samples of La- and Lu-agardite with the composition RECu6(OH)6(AsO4)3 · n H2O (RE = La, Lu; n≈3) have been prepared and the structure of the products was determined by X-ray powder diffraction studies. The characterization has been complemented by Raman and UV/Vis spectroscopic, magnetic and TGA investigations. DFT calculations support the conclusions drawn from the experiments. The arsenates RECu6(OH)6(AsO4)3 · n H2O (RE = La, Lu; n≈3) are isostructural with the mineral mixite and crystallize with a hexagonal structure which contains ribbons of edge-sharing [CuO5] square-pyramids extending along the hexagonal axis. They are interconnected via (AsO4)3− groups to form hexagonal tubes of about 10 Å inner diameter. Such zeolite-like tubes host water molecules, which can be reversibly removed at moderate temperatures (T≈100°C). Like in mixite and YCu6(OH)6(AsO4)3 · 3 H2O, the Cu2+ cations in RECu6(OH)6(AsO4)3 · n H2O (RE = La, Lu; n≈3) exhibit low-dimensional antiferromagnetic properties, which are subject to changes in the Cu–O–Cu bond lengths and angles due to the lanthanide contraction.

Sign in / Sign up

Export Citation Format

Share Document