Solubility study of Yb in n -type skutterudites Ybx Co4 Sb12 and their enhanced thermoelectric properties

J. Yang; Q. Hao; H. Wang; Y. C. Lan; Q. Y. He; A. Minnich; D. Z. Wang; J. A. Harriman; V. M. Varki; M. S. Dresselhaus; G. Chen; Z. F. Ren

doi:10.1103/PhysRevB.80.115329

Solubility study of Yb in n -type skutterudites Ybx Co4 Sb12 and their enhanced thermoelectric properties

J. Yang, Q. Hao, H. Wang, Y. C. Lan, Q. Y. He, A. Minnich, D. Z. Wang, J. A. Harriman, V. M. Varki, M. S. Dresselhaus, G. Chen, Z. F. Ren

Aerospace and Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

89 Scopus citations

Abstract

The solubility of Yb in Ybx Co4 Sb12 was reported to be 0.19 in bulk skutterudites made by melting and slow cooling method. Surprisingly we increased x close to 0.5 by a special sample preparation method: ball mill and hot press. We show that a higher Yb concentration not only increases the power factor due to a higher electron concentration but also reduces the thermal conductivity k because of stronger phonon scattering. In this way, we have achieved a dimensionless thermoelectric figure of merit ZT of about 1.2 at 550°C in Yb0.35 Co4 Sb12.

Original language	English (US)
Article number	115329
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	80
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevB.80.115329
State	Published - Sep 29 2009

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1103/PhysRevB.80.115329

Fingerprint Dive into the research topics of 'Solubility study of Yb in n -type skutterudites Ybx Co4 Sb12 and their enhanced thermoelectric properties'. Together they form a unique fingerprint.

Cite this

Yang, J., Hao, Q., Wang, H., Lan, Y. C., He, Q. Y., Minnich, A., Wang, D. Z., Harriman, J. A., Varki, V. M., Dresselhaus, M. S., Chen, G., & Ren, Z. F. (2009). Solubility study of Yb in n -type skutterudites Ybx Co4 Sb12 and their enhanced thermoelectric properties. Physical Review B - Condensed Matter and Materials Physics, 80(11), [115329]. https://doi.org/10.1103/PhysRevB.80.115329

Solubility study of Yb in n -type skutterudites Ybx Co4 Sb12 and their enhanced thermoelectric properties. / Yang, J.; Hao, Q.; Wang, H.; Lan, Y. C.; He, Q. Y.; Minnich, A.; Wang, D. Z.; Harriman, J. A.; Varki, V. M.; Dresselhaus, M. S.; Chen, G.; Ren, Z. F.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 80, No. 11, 115329, 29.09.2009.

Research output: Contribution to journal › Article › peer-review

@article{f244fad4b17c418ba935040ce6e1b169,

title = "Solubility study of Yb in n -type skutterudites Ybx Co4 Sb12 and their enhanced thermoelectric properties",

abstract = "The solubility of Yb in Ybx Co4 Sb12 was reported to be 0.19 in bulk skutterudites made by melting and slow cooling method. Surprisingly we increased x close to 0.5 by a special sample preparation method: ball mill and hot press. We show that a higher Yb concentration not only increases the power factor due to a higher electron concentration but also reduces the thermal conductivity k because of stronger phonon scattering. In this way, we have achieved a dimensionless thermoelectric figure of merit ZT of about 1.2 at 550°C in Yb0.35 Co4 Sb12.",

author = "J. Yang and Q. Hao and H. Wang and Lan, {Y. C.} and He, {Q. Y.} and A. Minnich and Wang, {D. Z.} and Harriman, {J. A.} and Varki, {V. M.} and Dresselhaus, {M. S.} and G. Chen and Ren, {Z. F.}",

year = "2009",

month = sep,

day = "29",

doi = "10.1103/PhysRevB.80.115329",

language = "English (US)",

volume = "80",

journal = "Physical Review B-Condensed Matter",

issn = "0163-1829",

publisher = "American Institute of Physics Publising LLC",

number = "11",

}

TY - JOUR

T1 - Solubility study of Yb in n -type skutterudites Ybx Co4 Sb12 and their enhanced thermoelectric properties

AU - Yang, J.

AU - Hao, Q.

AU - Wang, H.

AU - Lan, Y. C.

AU - He, Q. Y.

AU - Minnich, A.

AU - Wang, D. Z.

AU - Harriman, J. A.

AU - Varki, V. M.

AU - Dresselhaus, M. S.

AU - Chen, G.

AU - Ren, Z. F.

PY - 2009/9/29

Y1 - 2009/9/29

N2 - The solubility of Yb in Ybx Co4 Sb12 was reported to be 0.19 in bulk skutterudites made by melting and slow cooling method. Surprisingly we increased x close to 0.5 by a special sample preparation method: ball mill and hot press. We show that a higher Yb concentration not only increases the power factor due to a higher electron concentration but also reduces the thermal conductivity k because of stronger phonon scattering. In this way, we have achieved a dimensionless thermoelectric figure of merit ZT of about 1.2 at 550°C in Yb0.35 Co4 Sb12.

AB - The solubility of Yb in Ybx Co4 Sb12 was reported to be 0.19 in bulk skutterudites made by melting and slow cooling method. Surprisingly we increased x close to 0.5 by a special sample preparation method: ball mill and hot press. We show that a higher Yb concentration not only increases the power factor due to a higher electron concentration but also reduces the thermal conductivity k because of stronger phonon scattering. In this way, we have achieved a dimensionless thermoelectric figure of merit ZT of about 1.2 at 550°C in Yb0.35 Co4 Sb12.

UR - http://www.scopus.com/inward/record.url?scp=70350586440&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=70350586440&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.80.115329

DO - 10.1103/PhysRevB.80.115329

M3 - Article

AN - SCOPUS:70350586440

VL - 80

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 0163-1829

IS - 11

M1 - 115329

ER -