Title Phosphor Research Articles

ChemInform Abstract: Investigations on the Luminescence of Emission‐Tunable Ca10K(PO4)7:Eu2+, Sr2+, Mg2+ Phosphors for White LEDs.

AbstractThe title phosphors are prepared by solid state reactions of CaCO3, K2CO3, SrCO3, (MgCO3)4·Mg (OH)2·5H2O, (NH4)2HPO4, and Eu2O3 in a reducing atmosphere (N2:H2 = 95:5, 1180 °C, 6 h) and characterized by powder XRD, diffuse reflectance spectroscopy in the range of 200—700 nm, and luminescence spectroscopy.

ChemInform Abstract: Color‐Tunable Photoluminescence Phosphors of Ce3+ and Tb3+ Co‐Doped Sr2La8(SiO4)6O2 for UV w‐LEDs.

AbstractThe title phosphors are prepared by solid state reactions of SrCO3, SiO2, CeO2, La2O3, and Tb4O7 (alumina crucible, flowing 5%H2/95%N2, 1350 °C, 5 h).

Europium(ii)-activated oxonitridosilicate yellow phosphor with excellent quantum efficiency and thermal stability - a robust spectral conversion material for highly efficient and reliable white LEDs.

Knowing the physicochemical properties of a material is of great importance to design and utilize it in a suitable way. In this paper, we conduct a comprehensive survey of photoluminescence spectra, localized cathodoluminescence, temperature-dependent luminescence efficiency, and applications of Eu(2+)-doped Sr0.5Ba0.5Si2O2N2 in solid-state lighting. This phosphor exhibits a broad emission band with a maximum at 560-580 nm and a full-width at half maximum of 92-103 nm upon blue light excitation, whereas a dual-band emission (i.e., 470 nm and 550 nm) is observed under electron beam irradiation due to perhaps the intergrowth of BaSi2O2N2:Eu(2+) and Sr0.5+σBa0.5-σSi2O2N2:Eu(2+) in each phosphor particle. Under 450 nm blue light irradiation, this yellow phosphor exhibits excellent luminescence properties with absorption, internal and external efficiencies of 83.2, 87.7 and 72.6%, respectively. Furthermore, it also possesses high thermal stability, with the quantum efficiency being decreased by only 4.2% at 150 °C and a high quenching temperature of 450 °C. High-efficiency white LEDs using the title phosphor have a luminous efficacy, color temperature and color rendition of ∼120 lm W(-1), 6000 K and 61, respectively, validating its suitability for use in solid-state white lighting.

ChemInform Abstract: Novel Deep Red Emitting Phosphors Ca14Zn6M10O35:Mn4+ (M: Al3+ and Ga3+).

AbstractThe new deep red emitting title phosphors are synthesized by solid state reactions using CaCO3, ZnO, M2O3 (M: Al, Ga), and MnO2 as starting materials (Pt boat, air, 1473 K, 6 h).

ChemInform Abstract: Synthesis and Near‐Infrared Luminescence of La3GaGe5O16:Cr3+ Phosphors.

AbstractThe new title phosphor is synthesized by solid state reaction of La2O3, Ga2O3, GeO2, and Cr2O3 (alumina crucible, 1250 °C, 5 h in air).

ChemInform Abstract: Luminescent Properties of SrZn2(PO4)2:Tb3+ and Its Luminescence Improvement by Incorporating A+ (A: Li, Na, and K).

AbstractThe new title phosphor is synthesized by solid state reaction of SrCO3, ZnO, NH4H2PO4, and Tb4O7 (corundum crucibles, 900 °C, 5 h).

ChemInform Abstract: Luminescence Properties of Ca3Ti2O7:Eu3+, Bi3+, R+ (R+: Li+, Na+, and K+) Red Emission Phosphor.

AbstractThe title phosphors are prepared by solid state reaction using CaCO3, M2CO3 (M: Li, Na, K), TiO2, Eu2O3, and Bi2O3 as source materials (600 °C for 5 h and 1350 °C for 4 h in air).

ChemInform Abstract: A Bifunctional Cr/Yb/Tm:Ca3Ga2Ge3O12 Phosphor with Near‐Infrared Long‐Lasting Phosphorescence and Upconversion Luminescence.

AbstractThe title phosphor is synthesized by solid state reaction of a stoichiometric mixture of CaCO3, Ga2O3, GeO2, Cr2O3, Tm2O3, and Yb2O3 (900 °C for 2 h in air followed by calcination at 1180 °C for 6 h in air).

ChemInform Abstract: Synthesis of Red‐Emitting Nanocrystalline Phosphor CaAlSiN3:Eu2+ Derived from Elementary Constituents.

AbstractThe highly efficient red‐emitting title phosphor is prepared by a one‐pot ammonothermal method by dissolving Ca, Al, Si, and Eu in supercritical ammonia containing sodium azide as a mineralizer at 400 °C followed by increasing the reaction temperature to 580 °C.

ChemInform Abstract: A Single‐Phase Emission‐Tunable Ca5(PO4)3F:Eu2+,Mn2+ Phosphor with Efficient Energy Transfer for White LEDs.

AbstractThe title phosphor with different concentrations of dopants is prepared by a combustion‐assisted method using Eu2O3, MnCO3, Ca(NO3)2, NH4F, and NH4H2PO4 as starting materials, and CO(NH2)2 as the fuel (flowing 5%H2/N2, porcelain boat, 900 °C, 3 h).

ChemInform Abstract: Preparation of High Performance CaAlSiN3:Eu2+ Phosphors with the Aid of BaF2 Flux.

AbstractThe strong red‐emitting title phosphor is synthesized by solid state reaction of Ca3N2, AlN, Si3N4, and EuN using BaF2, CaF2, NH4F, or H3BO3 as flux (BN crucibles, flowing N2, 1600 °C, 4 h).

ChemInform Abstract: A Novel Tunable Na2Ba6(Si2O7) (SiO4)2:Ce3+,Mn2+ Phosphor with Excellent Thermal Stability for White Light Emitting Diodes.

AbstractThe title phosphor is synthesized by solid state reaction of NaNO3, BaCO3, SiO2, CeO2, and MnCO3 (5% H2—95% N2, 1050 °C, 8 h) and characterized by XRD and photoluminescence spectroscopy.

ChemInform Abstract: Carbothermal Reduction Synthesis Using CaCN2 as Calcium and Carbon Sources for CaAlSiN3:Eu2+ Phosphor and Their Luminescence Properties.

AbstractHigh‐quality powders of the title phosphor are synthesized from mixtures of CaCN2, CaCo3:Eu3+, AlN, and Si3N4 (BN crucible, 0.1 MPa N2, 1600 °C, 5—7 h).

ChemInform Abstract: Synthesis, Persistent Luminescence, and Thermoluminescence Properties of Yellow Sr3SiO5:Eu2+,RE3+ (RE: Ce, Nd, Dy, Ho, Er, Tm, Yb) and Orange‐Red Sr3‐xBaxSiO5:Eu2+, Dy3+ Phosphor.

AbstractThe title phosphors are prepared by solid state reactions of SrCO3, BaCO3, SiO2, and rare earth oxides (600 °C for 2 h in air and sintering at 1500 °C for 6 h under N2/H2 atmosphere).

ChemInform Abstract: Preparation and Photoluminescence of Green‐Emitting Phosphors SrGa2S4: Eu.

AbstractThe photoluminescent properties of the title phosphor as a green emitting candidate for phosphor‐converted three‐band white LEDs are examined.

ChemInform Abstract: Color‐Tunable and White Luminescence Properties via Energy Transfer in Single‐Phase KNaCa2(PO4)2:A (A: Ce3+, Eu2+, Tb3+, Mn2+, Sm3+) Phosphors.

AbstractThe title phosphors are synthesized by a Pechini‐type sol—gel method followed by calcination in air at 950 °C for 4 h.

ChemInform Abstract: Luminescence Properties of a Blue‐Emitting Phosphor: (Sr1‐xEux)Si9Al19ON31 (0 < x ≤ 1).

AbstractThe blue‐emitting title phosphors are synthesized from mixtures of AlN, α‐Si3N4, SrCO3, and Eu2O3 (1 MPa N2, 1800 °C, 2 h).

ChemInform Abstract: Structural and Luminescence Characteristics of Sr3Al8SiO17:Eu2+ Nanophosphor.

AbstractThe title phosphor is synthesized from stoichiometric mixtures of Sr(NO3)2, Al(NO3)3, SiO2, Eu2O3 dissolved in HNO3, and urea preheated to 600 °C, followed by spontaneous ignition and combustion.

ChemInform Abstract: Synthesis, Crystal Structure and Luminescence Properties of CaY2‐xEuxGe3O10 (x = 0—2).

AbstractThe red emitting title phosphors are prepared by solid state reaction of stoichiometric mixtures of Y2O3, Eu2O3, CaCO3, and GeO2 (1250 °C, 72 h) and by an EDTA‐complexing process from nitric acid solutions of Y2O3, Eu2O3, and CaCO3, EDTA, and ammonia solutions of GeO2 (annealing at 1100 °C, 6 h).

ChemInform Abstract: Eu2+‐Doped M2SiO4 (M: Ca, Ba) Phosphors Prepared by a Rapid Microwave‐Assisted Sol—Gel Method: Phase Formation and Optical Properties.

AbstractThe green‐emitting title phosphors a prepared by an optimized fast and energy‐efficient citrate based sol—gel reaction with subsequent combustion in a domestic microwave oven leading to high quality materials in less than 25 min of final heating time.