Microstructure and thermoelectric properties of p-type Fe0.9Mn0.1Si2 compounds prepared by pressureless sintering

SiC powders with nickel powders and sintering aids were prepared by pressureless sintering at 1500oC under a N2 atmosphere. XRD, TEM, SEM techniques were used to characterize the phases and microstructure of the specimens. The thermoelectric properties of SiC matrix composites were investigated by measuring the Seebeck coefficient and the electrical conductivity. The main phase of all samples was -SiC, the Ni2Si can be observed with adding nickel powders. The largest electric conductivity was close to 3.5 m-1-1 at about 973K. The highest Seeback coefficient was up to 1800 V/K at 1073K. The transition from n-type to p-type was occurred.

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First-principles calculations to investigate mechanical, optoelectronic and thermoelectric properties of half-Heusler p-type semiconductor BaAgP

Results in Physics ◽

10.1016/j.rinp.2021.104068 ◽

2021 ◽

pp. 104068

Author(s):

F. Parvin ◽

M.A. Hossain ◽

I. Ahmed ◽

K. Akter ◽

A.K.M.A. Islam

Keyword(s):

Thermoelectric Properties ◽

First Principles ◽

First Principles Calculations ◽

Type Semiconductor ◽

P Type

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Enhancing thermoelectric properties of p-type CoSb3 skutterudite by Fe doping

Materials Science in Semiconductor Processing ◽

10.1016/j.mssp.2021.105721 ◽

2021 ◽

Vol 127 ◽

pp. 105721

Author(s):

Suchitra Yadav ◽

Sujeet Chaudhary ◽

Dinesh K. Pandya

Keyword(s):

Thermoelectric Properties ◽

Fe Doping ◽

P Type

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Giant Tuning of Electronic and Thermoelectric Properties by Epitaxial Strain in p-Type Sr-Doped LaCrO3 Transparent Thin Films

ACS Applied Electronic Materials ◽

10.1021/acsaelm.1c00425 ◽

2021 ◽

Author(s):

Dong Han ◽

Rahma Moalla ◽

Ignasi Fina ◽

Valentina M. Giordano ◽

Marc d’Esperonnat ◽

...

Keyword(s):

Thin Films ◽

Thermoelectric Properties ◽

Epitaxial Strain ◽

P Type

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Optimization of the Thermoelectric Properties of p-Type Mg2–yLiyGe1–xSnx and Mg2–yLiyGe1–zSiz with x, z = 0.1 and 0.2

ACS Applied Energy Materials ◽

10.1021/acsaem.1c00172 ◽

2021 ◽

Author(s):

Vidushi Galwadu Arachchige ◽

Hasbuna Kamila ◽

Aryan Sankhla ◽

Léo Millerand ◽

Silvana Tumminello ◽

...

Keyword(s):

Thermoelectric Properties ◽

P Type

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Mechanosynthesis and Thermoelectric Properties of Fe, Zn, and Cd-Doped P-Type Tetrahedrite: Cu12-xMxSb4S13

Materials ◽

10.3390/ma14133448 ◽

2021 ◽

Vol 14 (13) ◽

pp. 3448

Author(s):

Francisco Arturo López Cota ◽

José Alonso Díaz-Guillén ◽

Oscar Juan Dura ◽

Marco Antonio López de la Torre ◽

Joelis Rodríguez-Hernández ◽

...

Keyword(s):

Thermoelectric Properties ◽

Figure Of Merit ◽

Powder Processing ◽

High Energy ◽

Secondary Phases ◽

Ambient Conditions ◽

Cadmium Sulfate ◽

Electrical Conductivities ◽

Compositional Changes ◽

P Type

This contribution deals with the mechanochemical synthesis, characterization, and thermoelectric properties of tetrahedrite-based materials, Cu12-xMxSb4S13 (M = Fe2+, Zn2+, Cd2+; x = 0, 1.5, 2). High-energy mechanical milling allows obtaining pristine and substituted tetrahedrites, after short milling under ambient conditions, of stoichiometric mixtures of the corresponding commercially available binary sulfides, i.e., Cu2S, CuS, Sb2S3, and MS (M = Fe2+, Zn2+, Cd2+). All the target materials but those containing Cd were obtained as single-phase products; some admixture of a hydrated cadmium sulfate was also identified by XRD as a by-product when synthesizing Cu10Cd2Sb4S13. The as-obtained products were thermally stable when firing in argon up to a temperature of 350–400 °C. Overall, the substitution of Cu(II) by Fe(II), Zn(II), or Cd(II) reduces tetrahedrites’ thermal and electrical conductivities but increases the Seebeck coefficient. Unfortunately, the values of the thermoelectric figure of merit obtained in this study are in general lower than those found in the literature for similar samples obtained by other powder processing methods; slight compositional changes, undetected secondary phases, and/or deficient sintering might account for some of these discrepancies.

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