Sol–gel synthesis of inorganic complex fluorides using trifluoroacetic acid

Multi-Photon Phosphor Feasibility Research

“…The resulting washed and dried powder was single phase LiErF 4 . Sol gel methods were used to form powders and films of SrAlF 3 and BaMgF 4 [213]. The starting materials were strontium, barium or magnesium acetate [M(CH 3 COO) 2 ] and aluminum ethoxide [Al(OC 2 H 5 ) 3 ].…”

Quantum cutting abilities of sol–gel derived LiGdF4:Eu3+ powders

“…In that case, powder samples were prepared by conventional solid-state synthesis. In our lab, we have succeeded in developing the same class of materials by the sol-gel process from metal alkoxides and lanthanide salts while the fluorination process occurs in situ by thermal decomposition of a fluorine-containing b-diketone during the firing treatment [11]. Starting from precursors at the molecular scale, this synthesis method is a convenient way to produce at low temperature high purity materials with chemical homogeneity.…”

Chemical processing for inorganic fluoride and oxyfluoride materials having optical functions

“…This coating/heating procedure is repeated several times to control the film thickness. Metal fluoride and oxyfluoride powders can be obtained by heating dried trifluoroacetate gels [18][19][20].…”

“…BaMgF 4 thin films can be obtained by the sol-gel method from trifluoroacetate solutions containing Ba 2+ and Mg 2+ [18]. Heat treatments of the coated films should be carried out with care because the decomposition temperature of each metal trifluoroacetate is slightly different.…”