| 摘要 |
The invention provides a lighting unit comprising a light source, configured to generate light source light and a luminescent material, configured to convert at least part of the light source light into luminescent material light, wherein the light source comprises a light emitting diode (LED) and wherein the luminescent material comprises a phosphor comprising M2AX6 doped with tetravalent manganese, wherein M comprises monovalent cations, at least comprising potassium and rubidium, wherein A comprises a tetravalent cation, at least comprising silicon, wherein X comprises a monovalent anion, at least comprising fluorine, and wherein M2AX6 has the hexagonal phase. |
| 主权项 |
1. A device comprising:
a light source, for generating light source light; and a luminescent material, for converting at least part of the light source light into luminescent material light, wherein the luminescent material comprises hexagonal phase (K1-r-l-n-c-nhRbrLilNanCsc(NH4)nh)2Si1-m-t-g-s-zrMnmTitGegSnsZrzr(F1-cl-b-iClclBrbIi)6, wherein m is in the range of 0.001-0.15, wherein t, g, s, and zr are each individually in the range of 0-0.2, with t+g+s+zr is greater than 0 and equal to or smaller than 0.2, wherein r is in the range of 0.2-0.8, wherein l, n, c, and nh are each individually in the range of 0-0.2, with l+n+c+nh greater than 0 and equal to or smaller than 0.2, wherein cl, b, and i are each individually in the range of 0-0.2, with cl+b+i greater than 0 and equal to or smaller than 0.2; wherein the luminescent material is in direct contact with the light source. |
