Synthesis, characterization and crystal structure of K2Bi(PO4)(MoO4)

Synthesis and luminescence characteristics of K2Bi(PO4)(MO4):Eu3+(M = Mo,W) red-emitting phosphor for white LEDs

“…2. All the peaks of these compounds can be indexed to pure KBiPMo phase with orthorhombic system and consistent with that reported by Zatovsky et al [14]. The dopants of Eu 3+ do not induce a significant change of crystalline structure, which is reasonable because the ionic radii of Eu 3+ (121 pm, Coordination Number [abbreviated as CN] = 8) and Bi 3+ ions (131 pm, CN = 8) are close and comparable.…”

“…1, which is in good agreement with ref. [14]. The intense band at 1051 cm −1 , may be ascribed to the asymmetric stretching vibration in PO 4 tetrahedron.…”

“…In KBiPMo host compound, considering the almost identical ionic radii and same valency of Bi 3+ and Eu 3+ ions, Eu 3+ ions prefer to occupy eight-coordinated Bi sites. The Bi-Bi distances between two nearest neighboring Bi 3+ ions located at adjacent parallel zig-zig chains, is reported to be 4.05 Å [14]. This distance is quite short, thus, energy transfer between two Eu 3+ ions should be very effective.…”

“…Recently, new series phosphatetungsto-molybdates, K 2 Bi(PO 4 )(MO 4 )(M = Mo,W) were reported [14,15] …”

Effect of Structure on the Luminescent Characteristics of Complex Oxide Compounds of Bismuth(III) Doped with Europium(III)

“…Materials based on complex framework oxides of bismuth are finding ever-increasing application in modern technology on account of the possibility of using them in catalysis [1], and as matrices for the creation of white light-emitting diodes for laser materials and X-ray detectors [2]. Such compounds include the double molybdates and tungstates of mono-and trivalent metals Ì ² Ì ²²² (ÌîO 4 ) 2 and M 5 I Ì ²²² (ÌîO 4 ) 4 , where M I is an alkali metal and M III is Al, Sc, Y, In, Ln, or Bi, and also L³ 8 ³ 2 (ÌîO 4 ) 7 [3][4][5], bismuth phosphates BiPO 4 and Na 3 Bi(PO 4 ) 2 [6], and polyanionic compounds K 2 Bi(PO 4 )(MoO 4 ) [7]. Thanks to the considerable possibilities of variation in the elemental and quantitative composition such compounds are extremely convenient and promising subjects not only for determining the structure-property relationships but also for solving fundamental problems in the physicochemical principles of inorganic materials science.…”