ChemInform Abstract: THERMAL QUENCHING OF LUMINESCENCE IN A DISORDERED COMPOUND: EUNA2MG2(VO4)3

Abstract

Die Lumineszenz der Titelverbindung ist unter 365 nm‐Anregung bei 25°C 6mal heller als die von YVO4:Eu; allerdings tritt bei höheren Temp. thermische Löschung auf.

The thermal stability and structural site-distribution of Eu3+ ions in the red-emitting phosphors Ca9Eu2W4O24 and Sr9Eu2W4O24

“…(2)) have been developed to explain this thermal quenching effect. Additionally the microstructures of Eu 3+ -substitution in a host lattice have an obvious influence on the thermal quenching of the luminescence [26,28]. Consequently, it is necessary to investigate the microstructure of Eu 3+ ions in the two hosts.…”

Vanadate Phosphors for Energy Efficient Lighting

“…The high chemical and thermal property of vanadate makes its preparation diffi cult. The preparations of phosphors mainly focus on the high-temperature solid-state reactions providing agglomerated powders, which can change the structural characteristics of the powders [30,14,15,[36][37][38]. Recently, the development of new methods for the synthesis of micro or nano phosphors may increase the probability for high effective rare-earth phosphors [39][40][41][42][43][44][45][46][47][48].…”

Synthetic and spectroscopic studies of vanadate glaserites I: Upconversion studies of doubly co-doped (Er, Tm, or Ho):Yb:K3Y(VO4)2

“…Numerous reports exist on the fluorescence studies of lanthanide doped orthovanadates such as YVO 4 , and other double or triple orthovanadates such as Na 3 Y(VO 4 ) 2 , KZnLa(VO 4 ) 2 , KCaY(VO 4 ) 2 , EuNa 2 Mg 2 (VO 4 ) 3 , Bi x Y y Eu 1-x-y Na 2 Mg 2 (VO 4 ) 3 , and NaCaLa(VO 4 ) 2 doped with spectroscopically active lanthanide ions under NUV (near-ultraviolet), UV, or NIR excitation [16][17][18][19][20][21][22][23][24][25]. In particular, vanadates such as K 3 Y(VO 4 ) 2 , having a trigonal structure type (space group Wϯ ŵϭ) based on the mineral glaserite, K 3 Na(SO 4 ) 2 , would be of interest due to the high symmetry of the metal sites.…”