The spectral and structural properties of K5Nd(MoO4)4

K5Eu(MoO4)4 red phosphor for solid state lighting applications, prepared by different techniques

“…The calculated value of the lifetime of 5 D 0 state is close to that previously obtained for the KEMO crystal grown by slow cooling (10 K h −1 ) from 1073 K (τ = 1.4 ms). 30 A light increase of 5 D 0 lifetime from 1.1 to 1.4 μs with Eu 3+ concentration together with a single exponential character of decays was found for K 5 Bi 1−x Eu x (MoO 4 ) 4 crystals grown by the Czochralski method. 31,32 Lifetime behavior suggests the presence of a fast energy transfer between Eu 3+ ions.…”

“…[15][16][17][18][19][20][21][22][23][24][25][26] Molybdenum oxides M 5 R(MoO 4 ) 4 (M = Rb, K, Tl; R = RE) with the palmierite-type (K 2 Pb(SO 4 ) 2 ) [27][28] structure can be also under consideration due to their high luminescence intensity. 15,29,30 Another important advantage of these compounds is the possibility to grow sufficiently large crystals by the Czochralski method at sufficiently low temperatures. [17][18][19][20]22,[31][32][33] This allows expanding the variety of experimental methods to study the physical properties of the compounds, and to compare luminescent properties of crystals with those of powders or ceramics.…”

“…15–26 Molybdenum oxides M 5 R(MoO 4 ) 4 (M = Rb, K, Tl; R = RE) with the palmierite-type (K 2 Pb(SO 4 ) 2 ) 27–28 structure can be also under consideration due to their high luminescence intensity. 15,29,30 Another important advantage of these compounds is the possibility to grow sufficiently large crystals by the Czochralski method at sufficiently low temperatures. 17–20,22,31–33…”

K5Yb1−xEux(MoO4)4 phosphors: aperiodic structures and luminescence properties

“…[6][7][8] There are many host matrices for the preparation of luminescent materials doped with REEs. Due to the high intensity [9][10][11] and efficient quantum yield 12 of Mo-based M 5 R(MoO 4 ) 4 (M = Rb, K, Tl; R = RE) phosphors with a palmierite-related (K 2 Pb(SO 4 ) 2 ) 13 structure, they can be considered as materials for different light applications. Different cations in the K 2 Pb(SO 4 ) 2 -type structure occupy two types of positions and the formula can be described as M2 [9+1] 2 M1 [6+6] (AO 4 ) 2 .…”

K5Eu1–xTbx(MoO4)4 Phosphors for Solid-State Lighting Applications: Aperiodic Structures and the Tb3+ → Eu3+ Energy Transfer

“…The high luminescence intensity − of Mo-based M 5 R(MoO 4 ) 4 (M = Rb, K, Tl; R = RE) phosphors with the palmierite-related (K 2 Pb­(SO 4 ) 2 ) structure allows us to consider them as materials for pc-LED applications. The ability to grow bulk single crystals of these compounds by the Czochralski technique is an important advantage of them. − Moreover, crystals with a palmierite-type structure can be grown at lower temperatures (at 1068–1173 K , ) compared to scheelite-related molybdates (at 1333 K − ), which provides an important technological advantage.…”