Crystal structure and vibrational properties of Cu2ZnSiSe4 quaternary semiconductor

被引：21

作者：

Litvinchuk, A. P. ^{[1
,2
]}

Dzhagan, V. M. ^{[3
,4
]}

Yukhymchuk, V. O. ^{[3
]}

Valakh, M. Ya. ^{[3
]}

Parasyuk, O. V. ^{[5
]}

Piskach, L. V. ^{[5
]}

Wang, X. ^{[1
,6
]}

Jacobson, A. J. ^{[1
,6
]}

Zahn, D. R. T. ^{[4
]}

机构：

[1] Univ Houston, Texas Ctr Superconduct, Houston, TX 77204 USA

[2] Univ Houston, Dept Phys, Houston, TX 77204 USA

[3] Natl Acad Sci Ukraine, Inst Semicond Phys, Pr Nauky 45, UA-03028 Kiev, Ukraine

[4] Tech Univ Chemnitz, Semicond Phys, Reichenhainer Str 70, D-09107 Chemnitz, Germany

[5] Lesya Ukrainka Eastern European Natl Univ, Dept Gen & Inorgan Chem, Voli Ave 13, UA-43009 Lutsk, Ukraine

[6] Univ Houston, Dept Chem, Univ Pk, Houston, TX 77204 USA

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2016年 / 253卷 / 09期

关键词：

crystal structure; Cu2ZnSiSe4; eigenmodes; lattice dynamics; Raman scattering; THIN-FILMS; OPTICAL-PROPERTIES; RAMAN-SCATTERING; CU; CHALCOGENIDES; NANOCRYSTALS; EVOLUTION; DYNAMICS; BINARY; GROWTH;

D O I：

10.1002/pssb.201600175

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The crystal structure of Cu2ZnSiSe4 semiconductor, grown by the chemical vapor transport method, was determined by the powder and single-crystal X-ray diffraction and shown to be orthorhombic wurtzstannite (space group Pmn2(1)). Lattice dynamics of Cu2ZnSiSe4 is studied by the low-temperature off-resonant polarized and resonant Raman scattering. Out of the total 45 optical vibrational modes allowed by the symmetry, 37 are observed in the spectra and are assigned to the specific lattice eigenmodes based on their polarization properties and a comparison of frequencies with the results of density functional lattice dynamics calculations. Good agreement between theoretical and experimental mode frequencies is established. The vibrational patterns for the most intense spectral lines in experimental spectra as well as pronounced resonant enhancement of Si-related modes are discussed. (C) 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：1808 / 1815

页数：8

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