Patent ID: 8400707

Claim:
A medium that provides photon energy up-conversion comprising: at least two components and a matrix in which said at least two components are distributed, wherein a first component absorbs light at a first wavelength region w≦λ 1 ≦x, said first component functions as a sensitizer in said medium, a second component emits light at a second wavelength region y≦λ 2 ≦z, said second component functions as an emissive component in said medium, λ 2 ≦λ 1 , upon absorption of light by said first component at said first wavelength region λ 1 , said emissive component emits light at said second wavelength region λ 2 , said first component and said second component are organic compounds, said first component and said second component are distributed in said matrix, and said matrix is a solid, a gel, or a fluid with a viscosity equal to or greater than 0.59×10 −3 Pa·s.