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An open-framework bimetallic chalcogenide structure K3Rb3Zn4Sn3Se13 built on a unique [Zn49Sn3Se16] 12- cluster:: synthesis, crystal structure, ion exchange and optical properties
被引:32
|作者:
Wu, M
[1
]
Sul, WP
[1
]
Jasutkar, N
[1
]
Huang, XY
[1
]
Li, J
[1
]
机构:
[1] Rutgers State Univ, Dept Chem & Chem Biol, Piscataway, NJ 08854 USA
基金:
美国国家科学基金会;
关键词:
chalcogenides;
semiconductors;
chemical synthesis;
x-ray diffraction;
optical properties;
D O I:
10.1016/j.materresbull.2004.09.016
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
Single crystals of K3Rb3Zn4Sn3Se13 were synthesized by solvothermal method. The building block in this structure is a [Zn4Sn3Se16](12-) cluster which consists of four ZnSe4 and three SnSe4 tetrahedra connected through corner-sharing of Se atoms. The 3D network contains intersecting channels running parallel to the crystallographic [2 1 1], [1-1-1] and [12-1] directions. The disordered K+ and R+ cations reside in these channels. Ion exchange of Cs+ with disordered Rb+/K+ ions in the structure showed a partial replacement of 15.8%. Optical diffuse reflectance experiments were carried out and gave a sharp absorption edge at 2.6 eV. (C) 2004 Elsevier Ltd. All rights reserved.
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页码:21 / 27
页数:7
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