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Luminescence Matching with the Sensitivity Curve of the Human Eye: Optical Ceramics Mg 8– x M x (BN 2 ) 2 N 4 with M = Al ( x = 2) and M = Si ( x = 1)
Author(s) -
Ströbele Markus,
Dolabdjian Konstantin,
Enseling David,
Dutczak Danuta,
Mihailova Boriana,
Jüstel Thomas,
Meyer H.Jürgen
Publication year - 2015
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201403116
Subject(s) - chemistry , luminescence , wurtzite crystal structure , crystallography , analytical chemistry (journal) , nitride , ion , europium , crystal structure , x ray crystallography , diffraction , layer (electronics) , materials science , optics , physics , optoelectronics , organic chemistry , chromatography , hexagonal crystal system
Compounds Mg 8– x M x (BN 2 ) 2 N 4 were prepared by solid‐state reaction of MgCl 2 , Li 3 (BN 2 ), and AlN for M = Al, and of Mg 3 N 2 , BN, and Si 3 N 4 for M = Si. Their crystal structures were refined from powder X‐ray diffraction data with the space group R $\bar {3}$ m for M = Al, Si, and P2 1 / c for M = Si. The structures of Mg 8– x M x (BN 2 ) 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 Mg 8– x M x (BN 2 ) 2 N 4 show exceptional broad band emissions in the visible region of the spectrum, on excitation with UV radiation at λ ex = 320 nm.