Structure and thermoelectric properties of new quaternary tin and lead bismuth selenides, K1+xM4-2x Bi7+xSe15 (M = Sn, Pb) and K1-x Sn5-xBi11+xSe22

A. Mrotzek; K. S. Choi; D. Y. Chung; M. A. Lane; J. R. Ireland; P. W. Brazis; T. Hogan; C. R. Kannewurf; M. G. Kanatzidis

Structure and thermoelectric properties of new quaternary tin and lead bismuth selenides, K_1+xM_4-2x Bi_7+xSe₁₅ (M = Sn, Pb) and K_1-x Sn_5-xBi_11+xSe₂₂

A. Mrotzek^*, K. S. Choi, D. Y. Chung, M. A. Lane, J. R. Ireland, P. W. Brazis, T. Hogan, C. R. Kannewurf, M. G. Kanatzidis

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Conference article › peer-review

Abstract

We present the structure and thermoelectric properties of the new quaternary selenides K_1+xM_4-2xBi_7+xSe₁₅ (M = Sn, Pb) and K_1-xSn_5-xBi_11+x Se₂₂. The compound K_1+xM_4-2x Bi_7+xSe₁₅ (M= Sn, Pb) crystallize isostructural to A_1+xPb_4-2xSb_7+xSe₁₅ with A = K, Rb, while K_1-xSn_5-xBi_11+xSe₂₂ reveals a new structure type. In both structure types fragments of the Bi₂Te₃-type and the NaCl-type are connected to a three-dimensional anionic framework with K⁺ ions filled tunnels. The two structures vary by the size of the NaCl-type rods and are closely related to β-K₂Bi₈Se₁₃ and K_2.5Bi_8.5Se₁₄. The thermoelectric properties of K_1+xM_4-2xBi_7+xSe₁₅ (M = Sn, Pb) and K_1-xSn_5-xBi_11+xSe₂₂ were explored on single crystal and ingot samples. These compounds are narrow gap semiconductors and show n-type behavior with moderate Seebeck coefficients. They have very low thermal conductivity due to an extensive disorder of the metal atoms and possible "rattling" K⁺ ions.

Original language	English (US)
Journal	Proceedings - IEEE International Symposium on Circuits and Systems
Volume	4
State	Published - Jan 1 2001
Event	IEEE International Symposium on Circuits and Systems (ISCAS 2001) - Sydney, NSW, Australia Duration: May 6 2001 → May 9 2001

ASJC Scopus subject areas

Electrical and Electronic Engineering

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Mrotzek, A., Choi, K. S., Chung, D. Y., Lane, M. A., Ireland, J. R., Brazis, P. W., Hogan, T., Kannewurf, C. R., & Kanatzidis, M. G. (2001). Structure and thermoelectric properties of new quaternary tin and lead bismuth selenides, K_1+xM_4-2x Bi_7+xSe₁₅ (M = Sn, Pb) and K_1-x Sn_5-xBi_11+xSe₂₂ Proceedings - IEEE International Symposium on Circuits and Systems, 4.

@article{86df7704f6e34116bfe15cbdda8a7e5f,

title = "Structure and thermoelectric properties of new quaternary tin and lead bismuth selenides, K1+xM4-2x Bi7+xSe15 (M = Sn, Pb) and K1-x Sn5-xBi11+xSe22 ",

abstract = "We present the structure and thermoelectric properties of the new quaternary selenides K1+xM4-2xBi7+xSe15 (M = Sn, Pb) and K1-xSn5-xBi11+x Se22. The compound K1+xM4-2x Bi7+xSe15 (M= Sn, Pb) crystallize isostructural to A1+xPb4-2xSb7+xSe15 with A = K, Rb, while K1-xSn5-xBi11+xSe22 reveals a new structure type. In both structure types fragments of the Bi2Te3-type and the NaCl-type are connected to a three-dimensional anionic framework with K+ ions filled tunnels. The two structures vary by the size of the NaCl-type rods and are closely related to β-K2Bi8Se13 and K2.5Bi8.5Se14. The thermoelectric properties of K1+xM4-2xBi7+xSe15 (M = Sn, Pb) and K1-xSn5-xBi11+xSe22 were explored on single crystal and ingot samples. These compounds are narrow gap semiconductors and show n-type behavior with moderate Seebeck coefficients. They have very low thermal conductivity due to an extensive disorder of the metal atoms and possible {"}rattling{"} K+ ions.",

author = "A. Mrotzek and Choi, {K. S.} and Chung, {D. Y.} and Lane, {M. A.} and Ireland, {J. R.} and Brazis, {P. W.} and T. Hogan and Kannewurf, {C. R.} and Kanatzidis, {M. G.}",

year = "2001",

month = jan,

day = "1",

language = "English (US)",

volume = "4",

journal = "Proceedings - IEEE International Symposium on Circuits and Systems",

issn = "0271-4310",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

note = "IEEE International Symposium on Circuits and Systems (ISCAS 2001) ; Conference date: 06-05-2001 Through 09-05-2001",

}

Structure and thermoelectric properties of new quaternary tin and lead bismuth selenides, K_1+xM_4-2x Bi_7+xSe₁₅ (M = Sn, Pb) and K_1-x Sn_5-xBi_11+xSe₂₂ . / Mrotzek, A.; Choi, K. S.; Chung, D. Y. et al.

In: Proceedings - IEEE International Symposium on Circuits and Systems, Vol. 4, 01.01.2001.

Research output: Contribution to journal › Conference article › peer-review

TY - JOUR

T1 - Structure and thermoelectric properties of new quaternary tin and lead bismuth selenides, K1+xM4-2x Bi7+xSe15 (M = Sn, Pb) and K1-x Sn5-xBi11+xSe22

AU - Mrotzek, A.

AU - Choi, K. S.

AU - Chung, D. Y.

AU - Lane, M. A.

AU - Ireland, J. R.

AU - Brazis, P. W.

AU - Hogan, T.

AU - Kannewurf, C. R.

AU - Kanatzidis, M. G.

PY - 2001/1/1

Y1 - 2001/1/1

N2 - We present the structure and thermoelectric properties of the new quaternary selenides K1+xM4-2xBi7+xSe15 (M = Sn, Pb) and K1-xSn5-xBi11+x Se22. The compound K1+xM4-2x Bi7+xSe15 (M= Sn, Pb) crystallize isostructural to A1+xPb4-2xSb7+xSe15 with A = K, Rb, while K1-xSn5-xBi11+xSe22 reveals a new structure type. In both structure types fragments of the Bi2Te3-type and the NaCl-type are connected to a three-dimensional anionic framework with K+ ions filled tunnels. The two structures vary by the size of the NaCl-type rods and are closely related to β-K2Bi8Se13 and K2.5Bi8.5Se14. The thermoelectric properties of K1+xM4-2xBi7+xSe15 (M = Sn, Pb) and K1-xSn5-xBi11+xSe22 were explored on single crystal and ingot samples. These compounds are narrow gap semiconductors and show n-type behavior with moderate Seebeck coefficients. They have very low thermal conductivity due to an extensive disorder of the metal atoms and possible "rattling" K+ ions.

AB - We present the structure and thermoelectric properties of the new quaternary selenides K1+xM4-2xBi7+xSe15 (M = Sn, Pb) and K1-xSn5-xBi11+x Se22. The compound K1+xM4-2x Bi7+xSe15 (M= Sn, Pb) crystallize isostructural to A1+xPb4-2xSb7+xSe15 with A = K, Rb, while K1-xSn5-xBi11+xSe22 reveals a new structure type. In both structure types fragments of the Bi2Te3-type and the NaCl-type are connected to a three-dimensional anionic framework with K+ ions filled tunnels. The two structures vary by the size of the NaCl-type rods and are closely related to β-K2Bi8Se13 and K2.5Bi8.5Se14. The thermoelectric properties of K1+xM4-2xBi7+xSe15 (M = Sn, Pb) and K1-xSn5-xBi11+xSe22 were explored on single crystal and ingot samples. These compounds are narrow gap semiconductors and show n-type behavior with moderate Seebeck coefficients. They have very low thermal conductivity due to an extensive disorder of the metal atoms and possible "rattling" K+ ions.

UR - http://www.scopus.com/inward/record.url?scp=0035018971&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035018971&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:0035018971

SN - 0271-4310

VL - 4

JO - Proceedings - IEEE International Symposium on Circuits and Systems

JF - Proceedings - IEEE International Symposium on Circuits and Systems

T2 - IEEE International Symposium on Circuits and Systems (ISCAS 2001)

Y2 - 6 May 2001 through 9 May 2001

ER -

Structure and thermoelectric properties of new quaternary tin and lead bismuth selenides, K_1+xM_4-2x Bi_7+xSe₁₅ (M = Sn, Pb) and K_1-x Sn_5-xBi_11+xSe₂₂

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