Noncentrosymmetric cubic thio- and selenogermanates: A0.5M 1.75GeQ4 (A = Ag , Cu, Na; M = Pb, Eu; Q = S, Se)

Ratnasabapathy G. Iyer; Jennifer A. Aitken; Mercouri G. Kanatzidis

doi:10.1016/j.solidstatesciences.2004.03.001

Noncentrosymmetric cubic thio- and selenogermanates: A_0.5M _1.75GeQ₄ (A = Ag , Cu, Na; M = Pb, Eu; Q = S, Se)

Ratnasabapathy G. Iyer, Jennifer A. Aitken, Mercouri G. Kanatzidis

Northwestern University

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

29 Citations (Scopus)

Abstract

Five new isostructural cubic thiogermanates with the formula A _0.5M_1.75GeQ₄ (A=Ag, Cu, Na; M=Pb, Eu; Q=S, Se) have been prepared by direct combination of stoichiometric amounts of the elements. The compounds crystallize in the noncentrosymmetric space group I-43d with Z=16 and a=14.0291(5) Å for Ag_0.5Pb_1.75GeS ₄, a=14.5949(19) Å for Ag_0.5Pb _1.75GeSe₄, a=13.9491(14) Å for Ag _0.5Eu_1.75GeS₄, a = 13.8145(9) Å for Cu_0.5Pb_1.75GeS₄ and a = 14.662(4) Å for Na_0.5Pb_1.75GeSe₄. The adopted structure is similar to that of Ba₃CdSn₂S₈, and features tetrahedral [GeQ₄]^4- building blocks. These compounds are semiconductors with energy gaps (E_g) ranging from 1.48 to 1.83 eV.

Original language	English
Pages (from-to)	451-459
Number of pages	9
Journal	Solid State Sciences
Volume	6
Issue number	5
DOIs	https://doi.org/10.1016/j.solidstatesciences.2004.03.001
Publication status	Published - May 2004

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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@article{dc13319c847241cc9cdd94b9cfc247ff,

title = "Noncentrosymmetric cubic thio- and selenogermanates: A0.5M 1.75GeQ4 (A = Ag , Cu, Na; M = Pb, Eu; Q = S, Se)",

abstract = "Five new isostructural cubic thiogermanates with the formula A 0.5M1.75GeQ4 (A=Ag, Cu, Na; M=Pb, Eu; Q=S, Se) have been prepared by direct combination of stoichiometric amounts of the elements. The compounds crystallize in the noncentrosymmetric space group I-43d with Z=16 and a=14.0291(5) {\AA} for Ag0.5Pb1.75GeS 4, a=14.5949(19) {\AA} for Ag0.5Pb 1.75GeSe4, a=13.9491(14) {\AA} for Ag 0.5Eu1.75GeS4, a = 13.8145(9) {\AA} for Cu0.5Pb1.75GeS4 and a = 14.662(4) {\AA} for Na0.5Pb1.75GeSe4. The adopted structure is similar to that of Ba3CdSn2S8, and features tetrahedral [GeQ4]4- building blocks. These compounds are semiconductors with energy gaps (Eg) ranging from 1.48 to 1.83 eV.",

author = "Iyer, {Ratnasabapathy G.} and Aitken, {Jennifer A.} and Kanatzidis, {Mercouri G.}",

note = "Funding Information: Financial support from the National Science Foundation (Grant DMR 0127644) is gratefully acknowledged. This work made use of the SEM facilities at the Center for Electron Optics at Michigan State University. We acknowledge the use of the W.M. Keck Microfabrication facility at Michigan State University. ",

year = "2004",

month = may,

doi = "10.1016/j.solidstatesciences.2004.03.001",

language = "English",

volume = "6",

pages = "451--459",

journal = "Solid State Sciences",

issn = "1293-2558",

publisher = "Elsevier Masson SAS",

number = "5",

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T1 - Noncentrosymmetric cubic thio- and selenogermanates

T2 - A0.5M 1.75GeQ4 (A = Ag , Cu, Na; M = Pb, Eu; Q = S, Se)

AU - Iyer, Ratnasabapathy G.

AU - Aitken, Jennifer A.

AU - Kanatzidis, Mercouri G.

N1 - Funding Information: Financial support from the National Science Foundation (Grant DMR 0127644) is gratefully acknowledged. This work made use of the SEM facilities at the Center for Electron Optics at Michigan State University. We acknowledge the use of the W.M. Keck Microfabrication facility at Michigan State University.

PY - 2004/5

Y1 - 2004/5

N2 - Five new isostructural cubic thiogermanates with the formula A 0.5M1.75GeQ4 (A=Ag, Cu, Na; M=Pb, Eu; Q=S, Se) have been prepared by direct combination of stoichiometric amounts of the elements. The compounds crystallize in the noncentrosymmetric space group I-43d with Z=16 and a=14.0291(5) Å for Ag0.5Pb1.75GeS 4, a=14.5949(19) Å for Ag0.5Pb 1.75GeSe4, a=13.9491(14) Å for Ag 0.5Eu1.75GeS4, a = 13.8145(9) Å for Cu0.5Pb1.75GeS4 and a = 14.662(4) Å for Na0.5Pb1.75GeSe4. The adopted structure is similar to that of Ba3CdSn2S8, and features tetrahedral [GeQ4]4- building blocks. These compounds are semiconductors with energy gaps (Eg) ranging from 1.48 to 1.83 eV.

AB - Five new isostructural cubic thiogermanates with the formula A 0.5M1.75GeQ4 (A=Ag, Cu, Na; M=Pb, Eu; Q=S, Se) have been prepared by direct combination of stoichiometric amounts of the elements. The compounds crystallize in the noncentrosymmetric space group I-43d with Z=16 and a=14.0291(5) Å for Ag0.5Pb1.75GeS 4, a=14.5949(19) Å for Ag0.5Pb 1.75GeSe4, a=13.9491(14) Å for Ag 0.5Eu1.75GeS4, a = 13.8145(9) Å for Cu0.5Pb1.75GeS4 and a = 14.662(4) Å for Na0.5Pb1.75GeSe4. The adopted structure is similar to that of Ba3CdSn2S8, and features tetrahedral [GeQ4]4- building blocks. These compounds are semiconductors with energy gaps (Eg) ranging from 1.48 to 1.83 eV.

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Noncentrosymmetric cubic thio- and selenogermanates: A_0.5M _1.75GeQ₄ (A = Ag , Cu, Na; M = Pb, Eu; Q = S, Se)

Abstract

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