New Metal Chalcogenides Ba4CuGa5Q12 (Q = S, Se) Displaying Strong Infrared Nonlinear Optical Response

Autor:	Joon I. Jang, Kuei Fang Hsu, Siao Han Yang, Bo Hsian Her, Yu Ming Chang, Shu Ming Kuo, John B Ketterson, In Chung, Mercouri G. Kanatzidis
Rok vydání:	2013
Předmět:	Materials science Infrared business.industry Metal chalcogenides General Chemical Engineering Stacking General Chemistry Crystallography Nonlinear optical Group (periodic table) Materials Chemistry Tetrahedron Optoelectronics Isostructural Absorption (chemistry) business
Zdroj:	Chemistry of Materials. 25:2427-2433
ISSN:	1520-5002 0897-4756
DOI:	10.1021/cm400311v
Popis:	A series of new metal chalcogenides Ba4CuGa5Q12 (Q = S, S0.75Se0.25, Se) were synthesized using KBr flux at 750 °C. The three compounds are isostructural and adopt the noncentrosymmetric space group P421c. Crystal data are as follows: Ba4CuGa5S12, 1, a = 13.040(1) A, c = 6.304(1) A, and Z = 2; Ba4CuGa5S9.00(1)Se2.92(1), 2, a = 13.1585(2) A, c = 6.3520(2) A, and Z = 2; Ba4CuGa5Se12, 3, a = 13.598(1) A, c = 6.527(1) A, and Z = 2. The three-dimensional framework in 1 is constructed by infinite columns ∞1[CuGa4S10]7– that surround the discrete GaS4 tetrahedra situated on a 4 axis. The discrete GaS4 tetrahedra on the stacking (112) planes and canted oriented edge-sharing CuS4 tetrahedra within the columns may account for the occurrence of strong second-harmonic generation (SHG) responses. Compounds 1–3 are transparent in the mid-infrared range and have the absorption edges at 2.82, 2.05, and 1.45 eV, respectively. The new nonlinear optical (NLO) materials are type-I nonphase matching at 693 nm and display st...
Databáze:	OpenAIRE
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