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

2021 ◽  
Vol 127 ◽  
pp. 105721
Author(s):  
Suchitra Yadav ◽  
Sujeet Chaudhary ◽  
Dinesh K. Pandya
Keyword(s):  
Thermoelectric Properties ◽  
Fe Doping ◽  
P Type

Thermoelectric Properties of Co1-xFexSb3 Prepared by Encapsulated Induction Melting

2007 ◽  
Vol 124-126 ◽  
pp. 939-942 ◽  
Author(s):  
Kwan Ho Park ◽  
Soon Chul Ur ◽  
Il Ho Kim
Keyword(s):  
Heat Treatment ◽  
Thermoelectric Properties ◽  
Single Phase ◽  
Solubility Limit ◽  
Subsequent Heat Treatment ◽  
Optimum Composition ◽  
Induction Melting ◽  
Fe Doping ◽  
Seebeck Coefficients ◽  
P Type

Co1-xFexSb3 skutterudites were synthesized by encapsulated induction melting and their thermoelectric properties were investigated. Single phase δ-CoSb3 was successfully obtained by the subsequent heat treatment at 773K for 24 hours in vacuum. However, δ-CoSb3 was decomposed to FeSb2 and Sb when x≥0.3, which means that the solubility limit of Fe to Co is x<0.3. The positive signs of Seebeck coefficients for all Fe-doped specimens revealed that Fe atoms acted as p-type dopants by substituting Co atoms. Thermoelectric properties were remarkably enhanced by Fe doping and optimum composition was found to be Co0.7Fe0.3Sb3 in this study.

scholarly journals Fe-Doping Effect on Thermoelectric Properties of p-Type Bi0.48Sb1.52Te3

Materials ◽  
2015 ◽  
Vol 8 (3) ◽  
pp. 959-965 ◽  
Author(s):  
Hyeona Mun ◽  
Kyu Lee ◽  
Suk Kim ◽  
Jong-Young Kim ◽  
Jeong Lee ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
Doping Effect ◽  
Fe Doping ◽  
P Type

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

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

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

2021 ◽  
Author(s):  
Vidushi Galwadu Arachchige ◽  
Hasbuna Kamila ◽  
Aryan Sankhla ◽  
Léo Millerand ◽  
Silvana Tumminello ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
P Type

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

Materials ◽  
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.

Thermoelectric properties of p-type polycrystalline Bi0.8Sb0.8In0.4Se3

2021 ◽  
Vol 118 (19) ◽  
pp. 193903
Author(s):  
Feng Jiang ◽  
Chengliang Xia ◽  
Yongbin Zhu ◽  
Zhijia Han ◽  
Chengyan Liu ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
P Type

Study on Phases and Thermoelectric Properties of Bulk Fe4Sb12 and Fe3CoSb12 Prepared by Milling and Sintering

2011 ◽  
Vol 121-126 ◽  
pp. 1526-1529
Author(s):  
Ke Gao Liu ◽  
Jing Li
Keyword(s):  
Thermoelectric Properties ◽  
Impurity Phase ◽  
Semiconductor Materials ◽  
Thermal Constant ◽  
X Ray Diffraction ◽  
X Ray ◽  
Seebeck Coefficients ◽  
Maximum Value ◽  
Type Semiconductor ◽  
P Type

Bulk Fe4Sb12 and Fe3CoSb12 were prepared by sintering at 600 °C. The phases of samples were analyzed by X-ray diffraction and their thermoelectric properties were tested by electric constant instrument and laser thermal constant instrument. Experimental results show that, the major phases of bulk samples are skutterudite with impurity phase FeSb2. The electric resistivities of the samples increase with temperature rising at 100~500 °C. The bulk samples are P-type semiconductor materials. The Seebeck coefficients of the bulk Fe4Sb12 are higher than those of bulk Fe3CoSb12 samples at 100~200 °C but lower at 300~500 °C. The power factor of the bulk Fe4Sb12 samples decreases with temperature rising while that of bulk Fe3CoSb12 samples increases with temperature rising at 100~500 °C. The thermal conductivities of the bulk Fe4Sb12 samples are relatively higher than those of and Fe3CoSb12, which maximum value is up to 0.0974 Wm-1K-1. The ZT value of bulk Fe3CoSb12 increases with temperature rising at 100~500 °C, the maximum value is up to 0.031.The ZT values of the bulk Fe4Sb12 samples are higher than those of bulk Fe3CoSb12 at 100~300 °C while lower at 400~500 °C.

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