Luminescence Matching with the Sensitivity Curve of the Human Eye: Optical Ceramics Mg8-xMx(BN2)(2)N-4 with M = Al (x=2) and M = Si (x=1)

作者：Stroebele Markus; Dolabdjian Konstantin; Enseling David; Dutczak Danuta; Mihailova Boriana; Juestel Thomas; Meyer H Juergen^*

来源：European Journal of Inorganic Chemistry, 2015, 2015(10): 1716-1725.

DOI：10.1002/ejic.201403116

• Ceramics
• Solid-state reactions
• Solid-state structures
• Doping
• Luminescence

Compounds Mg8-xMx(BN2)(2)N-4 were prepared by solid-state reaction of MgCl2, Li-3(BN2), and AlN for M = Al, and of Mg3N2, BN, and Si3N4 for M = Si. Their crystal structures were refined from powder X-ray diffraction data with the space group R (3) over barm for M = Al, Si, and P2(1)/c for M = Si. The structures of Mg8-xMx(BN2)(2)N-4 are characterized by layered arrangements of wurtzite-related block layers alternating with a layer of di-nitridoborate ions along the c-axis direction. Cations in each structure are surrounded tetrahedrally by nitride and di-nitridoborate ions. Europium(II)-doped powders of Mg8-xMx(BN2)(2)N-4 show exceptional broad band emissions in the visible region of the spectrum, on excitation with UV radiation at (ex) = 320 nm.

• 出版日期2015-4