| abstract |
Screen with a phosphor layer, which contains a phosphor preparation from a phosphor with a coating layer with one or more oxygen compounds of the elements zinc, aluminum, magnesium, calcium and barium and colloidal SiO 2 particles, the colloidal SiO 2 particles consisting of SiO 2 particles with an average particle size of 4 nm ≤ d ≤ 30 nm corresponding to a specific surface area of 100 m 2 / g ≤ A s ≤ 550 m 2 / g and SiO 2 particles with an average particle size of 50 nm ≤ d ≤ 150 nm corresponding to a specific surface area of 25 m 2 / g ≤ A s ≤ 70 m 2 / g. |