Back to results
US 2018/0072946 A1Published application
Fluorophore, light-emitting device, and method for manufacturing fluorophore
AssigneeDenka Company Limited
InventorsHideyuki EMOTO, Motoi TANAKA, Kazuhiro ITO
Life of this patent
Estimating the term…
Abstract
Provided is a phosphor represented by the general formula: A2MF6:Mn. The elements A each represents an alkali metal element, the element M represents one or more tetravalent metallic elements selected from Si, Ge, Sn, Ti, Zr and Hf. The phosphor has a minimal light absorption rate in a wavelength range of 300 nm or more and 350 nm or less of 67% or less, and a maximum light absorption rate in a wavelength range of 400 nm or more and 500 nm or less of 65% or more. The phosphor has a Mn content of 0.3% by mass or more and 1.5% by mass or less.
Claims9
A phosphor represented by the general formula:
- A2MF6:Mn in which the elements A each represents an alkali metal element, the element M represents one or more tetravalent metallic elements selected from Si, Ge, Sn, Ti, Zr and Hf;
- the phosphor having a minimal light absorption rate in a wavelength range of 300 nm or more and 350 nm or less of 67% or less, and a maximum light absorption rate in a wavelength range of 400 nm or more and 500 nm or less of 65% or more, the phosphor having a Mn content of 0.3% by mass or more and 1.5% by mass or less.
Dependencies are inferred from the claim text.