Synthesis, crystal structure and optical properties of K2Cu2GeS4

被引：11

作者：

Sun, Baohua ^{[1
,2
]}

He, Jianqiao ^{[1
,2
]}

Zhang, Xian ^{[3
,4
]}

Bu, Kejun ^{[1
,2
]}

Zheng, Chong ^{[5
]}

Huang, Fuqiang ^{[1
,3
,4
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

[2] Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China

[3] Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, 202 Chengfu Rd, Beijing 100871, Peoples R China

[4] Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, 202 Chengfu Rd, Beijing 100871, Peoples R China

[5] Northern Illinois Univ, Dept Chem & Biochem, De Kalb, IL 60115 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 725卷

基金：

美国国家科学基金会;

关键词：

Quaternary thiogermanate; Semiconductor; Layered structure; Intermediate band; PEROVSKITE NANOSHEETS; SOLVOTHERMAL SYNTHESES; EXFOLIATION; RB; NA; CHALCOGENIDES; HYDROXIDES; CHEMISTRY; TERNARY; OXIDES;

D O I：

10.1016/j.jallcom.2017.07.187

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A new compound K2Cu2GeS4 was successfully synthesized by using molten thiourea reactive flux method. The structure was determined by single crystal X-ray diffraction. The compound crystallizes in the monoclinic system of space group P2/c with a unit cell of a = 7.063 (3) angstrom, b = 5.435 (3) angstrom, c = 11.037 (6) angstrom and beta - 112.83 (3)degrees. The crystal structure of K2Cu2GeS4 is composed of defective anti-PbO like [Cu2GeS4](2) layers which are interleaved by K-1 cations. This compound is a semiconductor with an indirect band gap of 2.3 (1) eV, which is derived from optical absorption spectrum. First principles calculations reveal that K(2)Cu(2)GeS4 has interesting intermediate bands consisting of Ge-4s and S-3p orbitals. This new semiconductor is potentially suitable for solar photocatalytic and photoelectric applications. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：557 / 562

页数：6

共 50 条

[41] Crystal structure and nonlinear optical properties of the K2UO2(SO4)2 · 2H2O compound at 293 K
E. V. Alekseev
E. V. Suleĭmanov
E. V. Chuprunov
M. O. Marychev
V. A. Ivanov
G. K. Fukin
Crystallography Reports, 2006, 51 : 29 - 33
[42] Crystal structure and nonlinear optical properties of the K2UO2(SO4)2 • 2H2O compound at 293 K
Alekseev, E. V.
Suleimanov, E. V.
Chuprunov, E. V.
Marychev, M. O.
Ivanov, V. A.
Fukin, G. K.
CRYSTALLOGRAPHY REPORTS, 2006, 51 (01) : 29 - 33
[43] Synthesis and crystal structure of [Cu2(OAc)4(NCMe)2]•2MeCN
Ghassemzadeh, M
Aghapoor, K
Neumüller, B
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES, 1998, 53 (07): : 774 - 776
[44] Crystal structure and nonlinear optical properties of cluster [WS4Cu3Br(bipy)2]
Hu, YH
Zheng, HG
Liang, K
Song, YL
Li, YZ
Xin, XQ
CHINESE JOURNAL OF INORGANIC CHEMISTRY, 2003, 19 (05) : 539 - 542
[45] Synthesis and Crystal Structure of [Cu2(TTA)4•(4,4′-bpy)]
Jiang, Guang-Qi
Lu, Yong-Zhong
Li, Xian-Ling
Wei, Ran-Shi
Shao, Lin
ASIAN JOURNAL OF CHEMISTRY, 2013, 25 (08) : 4709 - 4710
[46] Synthesis, crystal structure, and transport properties of Cu2SnTe3
Alzahrani, Noha
Hobbis, Dean
Nolas, George S.
JOURNAL OF SOLID STATE CHEMISTRY, 2020, 290
[47] Synthesis and crystal structure of Sm2Ba4Cu2O9
Schüpp, B
Wende, C
JOURNAL OF ALLOYS AND COMPOUNDS, 2003, 361 (1-2) : 71 - 76
[48] Synthesis, crystal structure, and optical properties of a novel pentaborate, K2NaZnB5O10
Chen, Xuean
Yang, Chunyan
Chang, Xinan
Zang, Hegui
Xiao, Weiqiang
JOURNAL OF ALLOYS AND COMPOUNDS, 2010, 492 (1-2) : 543 - 547
[49] Synthesis, Crystal Structure, and Optical Properties of a New Quaternary Tin Polychalcogenide K2BaSnSe5
Shi, Jinlong
Sun, Mengran
Li, Chunxiao
Yao, Jiyong
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 2024, 650 (20):
[50] Synthesis, Single-crystal Structure, and Optical and Magnetic Properties of CaEr2S4
Mattausch Hansjürgen
Chinese Journal of Structural Chemistry, 2007, (08) : 973 - 979

← 1 2 3 4 5 →