WebWhen the excitation wavelength is increased from 285 to 300 nm, the internal quantum efficiencies (η i) of β-SiAlON:Eu 2+ phosphor is more than 70%, and the external quantum efficiencies (η 0) of β-SiAlON:Eu 2+ phosphor is more than 61%. 11 GaN chip-based LED is now an emerging back-light technology for wide color gamut and high efficiency ... WebTrivalent Pr3+-doped oxynitirde red phosphors β-SiAlON with composition Si6–zAlzOzN8–z:Prx (z = 0–2.0, x = 0.016) were synthesized by gas pressure sintering (GPS) at 1950 °C for 2 h. Red luminescence in the range 600–650 nm was detected upon excitation with 460 nm blue light, indicating that the phosphor can be excited by blue …
Full article: On the origin of fine structure in the photoluminescence …
WebFeb 1, 2024 · A phosphor plate includes a plate-like composite including an inorganic base material, which is a sintered material of two or more types of metal oxide including SiO2, and a phosphor contained in the inorganic base material, in which the phosphor includes an α-type sialon phosphor, and in a case in which intensity of transmitted light at a wavelength … WebMar 1, 2024 · The in situ Mg-sialon in low-carbon MgO-C refractories was studied with respect to its oxidation behavior and mechanism at 1500 °C. The results indicated that the oxidation index and rate constant of low-carbon MgO-C refractories with Mg-sialon were 26.2% and 0.51 × 10 −3 cm 2 /min at 1500 °C for 2 h, respectively. reserve health readiness program login
Highly Stable Red Oxynitride β-SiAlON:Pr3+ Phosphor for Light …
WebAs the phosphor containing the Si element, a known phosphor can be used, but for example, the α-type sialon phosphor may be used. The sintered material may be used alone or in combination of two or more. The α-type sialon phosphor may include an α-type sialon phosphor containing an Eu element represented by the following general formula (1). WebMar 9, 2010 · A warm white-LEDs with a luminous efficiency of about 55.1 lm/W and a color temperature 2,870 K was obtained using Sr-α-SiAlON:Eu 2+ phosphor. It is expected that … WebProvided herein are phosphors of the general molecular formula: (A2-2xEux(Mg1-yCay)PO4F wherein the variables are as defined herein. Methods of producing the phosphors are also provided. In some aspects, the present disclosure provides light-emitting devices comprising these phosphors. prosthetics programs canada