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Mn(IV)‐Substituted Metal(II) Hexafluorido Metallates(IV): Synthesis, Crystal Structures, and Luminescence Properties
Author(s) -
Bandemehr Jascha,
Baumann Dominik,
Seibald Markus,
Eklund Kim,
Karttunen Antti J.,
Kraus Florian
Publication year - 2021
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.202100576
Subject(s) - chemistry , hydrofluoric acid , crystal structure , luminescence , phosphor , crystallography , metal , inorganic chemistry , materials science , optoelectronics , organic chemistry
We synthesized 16 novel red‐emitting Mn(IV)‐substituted phosphors of the compositions MgGeF 6 : Mn, MgPbF 6 : Mn, Ca M F 6 : Mn ( M =Ge, Sn, Pb, Zr, Hf), SrSnF 6 : Mn, “SrTiF 6 : Mn”, BaPbF 6 : Mn, Zn M F 6 : Mn ( M =Sn, Pb, Zr, Hf), and Cd M F 6 : Mn ( M =Pb, Hf) using a dry‐chemical fluorination process completely avoiding hydrofluoric acid. In comparison with the commonly used red‐emitter K 2 SiF 6 : Mn (KSF) with its emission maximum at 630.8 nm, all above Ca and Sr compounds and CdHfF 6 : Mn show a blue‐shift of their emission maxima, the compound SrSnF 6 : Mn even by 4.2 nm down to 626.6 nm. The compounds were characterized by powder X‐ray diffraction, IR and emission spectroscopy. We additionally present the crystal structures of the unsubstituted compounds CaZrF 6 , CaHfF 6 , CaPbF 6 , CdZrF 6 , CdHfF 6 , and MgHfF 6 , which all crystallize isotypic in the NaSbF 6 structure type. The compound “SrTiF 6 ” was characterized by powder XRD and studied with evolutionary structure prediction methods, but its crystal structure could not yet be solved.