Homologous Series of 2D Chalcogenides Cs-Ag-Bi-Q (Q = S, Se) with Ion-Exchange Properties

Jing Zhao; Saiful M. Islam; Shiqiang Hao; Gangjian Tan; Constantinos C. Stoumpos; Chris Wolverton; Haijie Chen; Zhongzhen Luo; Rukang Li; Mercouri G. Kanatzidis

doi:10.1021/jacs.7b06373

Homologous Series of 2D Chalcogenides Cs-Ag-Bi-Q (Q = S, Se) with Ion-Exchange Properties

Jing Zhao, Saiful M. Islam, Shiqiang Hao, Gangjian Tan, Constantinos C. Stoumpos, Chris Wolverton, Haijie Chen, Zhongzhen Luo, Rukang Li, Mercouri G. Kanatzidis^*

^*Corresponding author for this work

Research output: Contribution to journal › Article

11 Scopus citations

Abstract

Four new layered chalcogenides Cs_1.2Ag_0.6Bi_3.4S₆, Cs_1.2Ag_0.6Bi_3.4Se₆, Cs_0.6Ag_0.8Bi_2.2S₄, and Cs₂Ag_2.5Bi_8.5Se₁₅ are described. Cs_1.2Ag_0.6Bi_3.4S₆ and Cs_1.2Ag_0.6Bi_3.4Se₆ are isostructural and have a hexagonal P6₃/mmc space group; their structures consist of [Ag/Bi]₂Q₃ (Q = S, Se) quintuple layers intercalated with disordered Cs cations. Cs_0.6Ag_0.8Bi_2.2S₄ also adopts a structure with the hexagonal P6₃/mmc space group and its structure has an [Ag/Bi]₃S₄ layer intercalated with a Cs layer. Cs_1.2Ag_0.6Bi_3.4S₆ and Cs_0.6Ag_0.8Bi_2.2S₄ can be ascribed to a new homologous family A_x[M_mS_1+m] (m = 1, 2, 3···). Cs₂Ag_2.5Bi_7.5Se₁₅ is orthorhombic with Pnnm space group, and it is a new member of the A₂[M_5+nSe_9+n] homology with n = 6. The Cs ions in Cs_1.2Ag_0.6Bi_3.4S₆ and Cs_0.6Ag_0.8Bi_2.2S₄ can be exchanged with other cations, such as Ag⁺, Cd²⁺, Co²⁺, Pb²⁺, and Zn²⁺ forming new phases with tunable band gaps between 0.66 and 1.20 eV. Cs_1.2Ag_0.6Bi_3.4S₆ and Cs_0.6Ag_0.8Bi_2.2S₄ possess extremely low thermal conductivity (<0.6 W·m^-1·K^-1).

Original language	English (US)
Pages (from-to)	12601-12609
Number of pages	9
Journal	Journal of the American Chemical Society
Volume	139
Issue number	36
DOIs	https://doi.org/10.1021/jacs.7b06373
State	Published - Jan 1 2017

ASJC Scopus subject areas

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

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@article{fd00a0fa9fa1472f80ba16e2ca0c647a,

title = "Homologous Series of 2D Chalcogenides Cs-Ag-Bi-Q (Q = S, Se) with Ion-Exchange Properties",

abstract = "Four new layered chalcogenides Cs1.2Ag0.6Bi3.4S6, Cs1.2Ag0.6Bi3.4Se6, Cs0.6Ag0.8Bi2.2S4, and Cs2Ag2.5Bi8.5Se15 are described. Cs1.2Ag0.6Bi3.4S6 and Cs1.2Ag0.6Bi3.4Se6 are isostructural and have a hexagonal P63/mmc space group; their structures consist of [Ag/Bi]2Q3 (Q = S, Se) quintuple layers intercalated with disordered Cs cations. Cs0.6Ag0.8Bi2.2S4 also adopts a structure with the hexagonal P63/mmc space group and its structure has an [Ag/Bi]3S4 layer intercalated with a Cs layer. Cs1.2Ag0.6Bi3.4S6 and Cs0.6Ag0.8Bi2.2S4 can be ascribed to a new homologous family Ax[MmS1+m] (m = 1, 2, 3···). Cs2Ag2.5Bi7.5Se15 is orthorhombic with Pnnm space group, and it is a new member of the A2[M5+nSe9+n] homology with n = 6. The Cs ions in Cs1.2Ag0.6Bi3.4S6 and Cs0.6Ag0.8Bi2.2S4 can be exchanged with other cations, such as Ag+, Cd2+, Co2+, Pb2+, and Zn2+ forming new phases with tunable band gaps between 0.66 and 1.20 eV. Cs1.2Ag0.6Bi3.4S6 and Cs0.6Ag0.8Bi2.2S4 possess extremely low thermal conductivity (<0.6 W·m-1·K-1).",

author = "Jing Zhao and Islam, {Saiful M.} and Shiqiang Hao and Gangjian Tan and Stoumpos, {Constantinos C.} and Chris Wolverton and Haijie Chen and Zhongzhen Luo and Rukang Li and Kanatzidis, {Mercouri G.}",

year = "2017",

month = jan,

day = "1",

doi = "10.1021/jacs.7b06373",

language = "English (US)",

volume = "139",

pages = "12601--12609",

journal = "Journal of the American Chemical Society",

issn = "0002-7863",

publisher = "American Chemical Society",

number = "36",

}

Homologous Series of 2D Chalcogenides Cs-Ag-Bi-Q (Q = S, Se) with Ion-Exchange Properties. / Zhao, Jing; Islam, Saiful M.; Hao, Shiqiang; Tan, Gangjian; Stoumpos, Constantinos C.; Wolverton, Chris; Chen, Haijie; Luo, Zhongzhen; Li, Rukang; Kanatzidis, Mercouri G.

In: Journal of the American Chemical Society, Vol. 139, No. 36, 01.01.2017, p. 12601-12609.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Homologous Series of 2D Chalcogenides Cs-Ag-Bi-Q (Q = S, Se) with Ion-Exchange Properties

AU - Zhao, Jing

AU - Islam, Saiful M.

AU - Hao, Shiqiang

AU - Tan, Gangjian

AU - Stoumpos, Constantinos C.

AU - Wolverton, Chris

AU - Chen, Haijie

AU - Luo, Zhongzhen

AU - Li, Rukang

AU - Kanatzidis, Mercouri G.

PY - 2017/1/1

Y1 - 2017/1/1

N2 - Four new layered chalcogenides Cs1.2Ag0.6Bi3.4S6, Cs1.2Ag0.6Bi3.4Se6, Cs0.6Ag0.8Bi2.2S4, and Cs2Ag2.5Bi8.5Se15 are described. Cs1.2Ag0.6Bi3.4S6 and Cs1.2Ag0.6Bi3.4Se6 are isostructural and have a hexagonal P63/mmc space group; their structures consist of [Ag/Bi]2Q3 (Q = S, Se) quintuple layers intercalated with disordered Cs cations. Cs0.6Ag0.8Bi2.2S4 also adopts a structure with the hexagonal P63/mmc space group and its structure has an [Ag/Bi]3S4 layer intercalated with a Cs layer. Cs1.2Ag0.6Bi3.4S6 and Cs0.6Ag0.8Bi2.2S4 can be ascribed to a new homologous family Ax[MmS1+m] (m = 1, 2, 3···). Cs2Ag2.5Bi7.5Se15 is orthorhombic with Pnnm space group, and it is a new member of the A2[M5+nSe9+n] homology with n = 6. The Cs ions in Cs1.2Ag0.6Bi3.4S6 and Cs0.6Ag0.8Bi2.2S4 can be exchanged with other cations, such as Ag+, Cd2+, Co2+, Pb2+, and Zn2+ forming new phases with tunable band gaps between 0.66 and 1.20 eV. Cs1.2Ag0.6Bi3.4S6 and Cs0.6Ag0.8Bi2.2S4 possess extremely low thermal conductivity (<0.6 W·m-1·K-1).

AB - Four new layered chalcogenides Cs1.2Ag0.6Bi3.4S6, Cs1.2Ag0.6Bi3.4Se6, Cs0.6Ag0.8Bi2.2S4, and Cs2Ag2.5Bi8.5Se15 are described. Cs1.2Ag0.6Bi3.4S6 and Cs1.2Ag0.6Bi3.4Se6 are isostructural and have a hexagonal P63/mmc space group; their structures consist of [Ag/Bi]2Q3 (Q = S, Se) quintuple layers intercalated with disordered Cs cations. Cs0.6Ag0.8Bi2.2S4 also adopts a structure with the hexagonal P63/mmc space group and its structure has an [Ag/Bi]3S4 layer intercalated with a Cs layer. Cs1.2Ag0.6Bi3.4S6 and Cs0.6Ag0.8Bi2.2S4 can be ascribed to a new homologous family Ax[MmS1+m] (m = 1, 2, 3···). Cs2Ag2.5Bi7.5Se15 is orthorhombic with Pnnm space group, and it is a new member of the A2[M5+nSe9+n] homology with n = 6. The Cs ions in Cs1.2Ag0.6Bi3.4S6 and Cs0.6Ag0.8Bi2.2S4 can be exchanged with other cations, such as Ag+, Cd2+, Co2+, Pb2+, and Zn2+ forming new phases with tunable band gaps between 0.66 and 1.20 eV. Cs1.2Ag0.6Bi3.4S6 and Cs0.6Ag0.8Bi2.2S4 possess extremely low thermal conductivity (<0.6 W·m-1·K-1).

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