Structure and luminescence properties of Zn3V2O8 yellow phosphor for white light emitting diodes

High-Pressure Structural Behavior and Equation of State of Kagome Staircase Compound, Ni3V2O8

“…Metal orthovanadates with formula M 3 V 2 O 8 , where M is a divalent metal, have been the focus of research in recent years, mainly because of their optical, dielectric, and magnetic properties [1][2][3][4]. These properties make the M 3 V 2 O 8 family of compounds useful in several technological applications, from photocatalytic water splitting [3] to light-emitting diodes [5] and ion batteries [6]. In addition, compounds such as Co 3 V 2 O 8 and Ni 3 V 2 O 8 have very interesting magnetic and ferroelastic properties [2], which are intimately related to the presence of kagome staircase two-dimensional (2D) magnetic layers [2].…”

The Deep Eutectic Solvent Precipitation Synthesis of Metastable Zn4V2O9

“…When the luminescence dependency on chemical composition was compared with the phase diagram of the ZnO-V 2 O 5 system, the yellow emission reached the maximum intensity in the area where Zn 4 V 2 O 9 (33% V) and Zn 3 V 2 O 8 (40% V) coexisted . Although the finding was based on the low-crystallinity samples, later reports further proved that Zn 3 V 2 O 8 possesses a promising yellow luminescence property with the quantum yield ranging between 43 and 52%. ,, Inspired by the previous work, we performed photoluminescence (PL) measurement for the as-synthesized Zn 4 V 2 O 9 with excitation wavelengths of 310 and 320 nm. Despite the incident photon energy being sufficient to excite the oxide phase, there was no discernable emission observed.…”

“…40 Although the finding was based on the low-crystallinity samples, later reports further proved that Zn 3 V 2 O 8 possesses a promising yellow luminescence property with the quantum yield ranging between 43 and 52%. 36,37,39 Inspired by the previous work, we performed photoluminescence (PL) measurement for the as-synthesized Zn 4 V 2 O 9 with excitation wavelengths of 310 and 320 nm. Despite the incident photon energy being sufficient to excite the oxide phase, there was no discernable emission observed.…”

“…For instance, zinc-rich vanadates have been identified as a potential anode material for lithium-ion batteries (energy storage). − Excellent rate performance, cycling stability, and high discharge capacity were reported for both Zn 3 V 2 O 8 and Zn 3 (OH) 2 V 2 O 7 ·2H 2 O). , In addition to the energy storage, Zn 3 V 2 O 8 has shown reasonable light-harvesting propertya quantum yield of 0.64% with a photocatalytic oxygen evolution reaction (OER) rate of 10.2 μmol/h under visible light (λ ≥ 420 nm) from a silver nitrate solution . Several vanadium oxides have been identified as potential phosphor material in white light-emitting diodes (LEDs). − An intense broad-band emission from 380 to ∼800 nm with internal quantum efficiencies of 79% and 87% was reported for RbVO 3 and CsVO 3 , respectively. , Zinc-rich compounds in the ZnO-V 2 O 5 system have shown to exhibit strong yellow (560 nm) luminescence . In addition, some vanadium oxides have shown good light-harvesting properties, suitable for sustainable chemical fuel production via photoelectrochemical (PEC) water splitting. − Monoclinic BiVO 4 (band gap, ∼2.4 eV) exhibits a quantum yield of 9% with a photocatalytic oxygen evolution reaction (OER) rate of 421 μmol/h under visible light (>420 nm) from a silver nitrate solution .…”

A computational study of the thortveitite structure of zinc pyrovanadate, Zn2V2O7, under pressure

“…In this context, vanadium-based electrode materials, such as metavanadates (MV 2 O 6 ), pyrovanadates (M 2 V 2 O 7 ) and orthovanadates (M 3 V 2 O 8 ) (M = divalent cations), have been widely used for many technological applications as electrodes in lithium-ion rechargeable batteries and supercapacitors, as long-life cathode materials of aqueous zinc-ion batteries and as phosphors for white light-emitting diodes. [4][5][6][7][8][9] Zinc pyrovanadate, Zn 2 V 2 O 7 , can be a better candidate than metavanadates and orthovanadates for use as a hydrogen storage material, as it shows a high storage capacity of more than 2899 mA h g −1 aer 20 cycles. 10 The latest experiment on nickel pyrovanadate reported excellent electrochemical properties with a high stable specic capacity of ∼960 mA h g −1 at a current density of 100 mA g −1 .…”