scholarly journals First-principles study of thermoelectric properties of Mg2Si–Mg2Pb semiconductor materials

RSC Advances ◽  
2018 ◽  
Vol 8 (31) ◽  
pp. 17168-17175 ◽  
Author(s):  
Tao Fan ◽  
Congwei Xie ◽  
Shiyao Wang ◽  
Artem R. Oganov ◽  
Laifei Cheng
Keyword(s):  
Thermoelectric Properties ◽  
Solid Solutions ◽  
First Principles ◽  
Figure Of Merit ◽  
Semiconductor Materials ◽  
Thermoelectric Figure Of Merit ◽  
Thermoelectric Figure ◽  
First Principles Study

Thermoelectric figure of merit of Mg2Si1−xPbx solid solutions as a function of temperature.

scholarly journals First-principles study of strain effect on the thermoelectric properties of LaP and LaAs

2021 ◽  
Author(s):  
Chia-Min Lin ◽  
Wei-Chih Chen ◽  
Cheng-Chien Chen
Keyword(s):  
High Temperature ◽  
Thermoelectric Properties ◽  
First Principles ◽  
Figure Of Merit ◽  
Strain Effect ◽  
Thermoelectric Figure Of Merit ◽  
Thermoelectric Figure ◽  
First Principles Study ◽  
Quantum Materials

The thermoelectric figure of merit ZT value of quantum materials lanthanum monopnictides can be boosted to ZT > 2 by isotropic strain at high temperature.

scholarly journals First-principles prediction of structural stability and thermoelectric properties of SrGaSnH

RSC Advances ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 3304-3314
Author(s):  
Enamul Haque ◽  
Mizanur Rahaman
Keyword(s):  
Thermal Conductivity ◽  
Structural Stability ◽  
Thermoelectric Properties ◽  
First Principles ◽  
Figure Of Merit ◽  
Lattice Thermal Conductivity ◽  
Phonon Scattering ◽  
Thermoelectric Figure Of Merit ◽  
Thermoelectric Figure

Weak anharmonicity: the weak anharmonicity leads to weak phonon scattering in SrGaSnH. Thus, SrGaSnH intrinsically possesses a high lattice thermal conductivity (kl).. Such large κl dramatically reduces the thermoelectric figure of merit.

scholarly journals Thermoelectric properties of DO3 V3Al using first principles calculations

RSC Advances ◽  
2017 ◽  
Vol 7 (71) ◽  
pp. 44647-44654 ◽  
Author(s):  
Xiaorui Chen ◽  
Yuhong Huang ◽  
Hong Chen
Keyword(s):  
Thermoelectric Properties ◽  
First Principles ◽  
Figure Of Merit ◽  
Thermoelectric Figure Of Merit ◽  
First Principles Calculations ◽  
Thermoelectric Figure ◽  
P Type

The calculated thermoelectric figure of merit ZT as a function of temperature for n-type antiferromagnetic DO3 V3Al and p-type antiferromagnetic DO3 V3Al is investigated.

scholarly journals Thermoelectric Properties of Solid Solutions PbSnAgTe

2017 ◽  
Vol 18 (2) ◽  
pp. 211-214 ◽  
Author(s):  
M.O. Haluschak ◽  
I.V. Horichok ◽  
T.O. Semko ◽  
S.I. Mydryi ◽  
S. Optasyuk ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Phase Composition ◽  
Thermoelectric Properties ◽  
Solid Solutions ◽  
Figure Of Merit ◽  
Thermoelectric Figure Of Merit ◽  
Thermoelectric Figure

The phase composition and thermoelectric properties of solid solutions Pb16Sn2Ag2Te20 and Pb14Sn4Ag2Te20 are researched. Biphasic structure of the samples is installed, which providing to low values of thermal conductivity. Best samples have values of dimensionless thermoelectric figure of merit ZT ≈ 0,55.

Influence of multi-sintering on the thermoelectric properties of Bi2Sr2Co2Oy ceramics

2019 ◽  
Vol 34 (02) ◽  
pp. 2050019 ◽  
Author(s):  
Y. Zhang ◽  
M. M. Fan ◽  
C. C. Ruan ◽  
Y. W. Zhang ◽  
X.-J. Li ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Properties ◽  
Figure Of Merit ◽  
Phonon Scattering ◽  
Sintered Sample ◽  
Thermoelectric Figure Of Merit ◽  
Thermoelectric Figure ◽  
The Third ◽  
Ceramic Samples ◽  
Optimum Formula

[Formula: see text] ceramic samples have a structure similar to phonon glass electronic crystals, and their thermoelectric properties can be effectively adjusted through repeated grinding and sintering. The results show that multi-sintering can make their grain refined and increase their grain boundary, which will effectively increase density and phonon scattering. Finally, multi-sintering can reduce the resistivity and thermal conductivity, thus obviously improve thermoelectric figure of merit [Formula: see text] of [Formula: see text]. The optimum [Formula: see text] value of 0.26 is achieved at 923 K by the third sintered sample.

Thermoelectric Properties of n-Type 90% Bi2Te3+10%Bi2Se3 Thermoelectric Materials Produced by Melt Spinning Method and Sintering

2007 ◽  
Vol 534-536 ◽  
pp. 161-164 ◽  
Author(s):  
Taek Soo Kim ◽  
Byong Sun Chun
Keyword(s):  
Solid Solutions ◽  
Thermoelectric Materials ◽  
Figure Of Merit ◽  
Melt Spinning ◽  
Bending Strength ◽  
Sintering Temperature ◽  
Thermoelectric Figure Of Merit ◽  
Vacuum Sintering ◽  
Thermoelectric Figure ◽  
Sintering Processes

N-type Bi2Te3-Sb2Te3 solid solutions doped with CdCl2 was prepared by melt spinning, crushing and vacuum sintering processes. Microstructure, bending strength and thermoelectric property were investigated as a function of the doping quantity from 0.03wt.% to 0.10wt.% and sintering temperature from 400oC to 500oC, and finally compared with those of conventionally fabricated alloys. The alloy showed a good structural homogeneity as well as bending strength of 3.88Kgf/mm2. The highest thermoelectric figure of merit was obtained by doping 0.03wt.% and sintering at 500oC.

Effects of Ce filling fraction and Fe content on the thermoelectric properties of Co-rich CeyFexCo4−xSb12

2001 ◽  
Vol 16 (3) ◽  
pp. 837-843 ◽  
Author(s):  
Xinfeng Tang ◽  
Lidong Chen ◽  
Takashi Goto ◽  
Toshio Hirai
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Properties ◽  
Figure Of Merit ◽  
Single Phase ◽  
Lattice Thermal Conductivity ◽  
Hole Concentration ◽  
Thermoelectric Figure Of Merit ◽  
Thermoelectric Figure ◽  
Filling Fraction ◽  
Fe Content

Single-phase filled skutterudite compounds, CeyFexCo4−xSb12 (x = 0 to 3.0, y = 0 to 0.74), were synthesized by a melting method. The effects of Fe content and Ce filling fraction on the thermoelectric properties of CeyFexCo4−xSb12 were investigated. The lattice thermal conductivity of Ce-saturated CeyFexCo4−xSb12, y being at the maximum corresponding to x, decreased with increasing Fe content (x) and reached its minimum at about x = 1.5. When x was 1.5, lattice thermal conductivity decreased with increasing Ce filling fraction till y = 0.3 and then began to increase after reaching the minimum at y = 0.3. Hole concentration and electrical conductivity of Cey Fe1.5Co2.5Sb12 decreased with increasing Ce filling fraction. The Seebeck coefficient increased with increasing Ce filling fraction. The greatest dimensionless thermoelectric figure of merit T value of 1.1 was obtained at 750 K for the composition of Ce0.28Fe1.52Co2.48Sb12.

scholarly journals Термоэлектрические свойства твердых растворов (CuInSe-=SUB=-2-=/SUB=-)-=SUB=-1-x-=/SUB=-(In-=SUB=-2-=/SUB=-Te-=SUB=-3-=/SUB=-)-=SUB=-x-=/SUB=-

2022 ◽  
Vol 56 (1) ◽  
pp. 38
Author(s):  
Ч.И. Абилов ◽  
М.Ш. Гасанова ◽  
Н.Т. Гусейнова ◽  
Э.К. Касумова
Keyword(s):  
Thermal Conductivity ◽  
Electrical Conductivity ◽  
Solid Solutions ◽  
Figure Of Merit ◽  
Charge Carriers ◽  
Thermoelectric Figure Of Merit ◽  
Thermoelectric Figure ◽  
Mobility Of Charge Carriers ◽  
Temperature Dependences ◽  
Thermoelectric Coefficient

The results of studying the temperature dependences of electrical conductivity, thermoelectric coefficient, Hall mobility of charge carriers, total and electronic thermal conductivity, as well as phonon thermal resistance of alloys of (CuInSe2)1-x(In2Te3)x solid solutions at x=0.005 and 0.0075 are presented. The values ​​of these parameters for certain temperatures were used to calculate the values ​​of the thermoelectric figure of merit of the indicated compositions. It turned out that as the temperature rises, the thermoelectric figure of merit tends to grow strongly, from which it can be concluded that these materials can be used in the manufacture of thermoelements.

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