Method of preparing storage phosphors from dedicated precursors

A method for producing a binderless phosphor screen or panel on a substrate containing a CsX:Eu stimulable phosphor, wherein X represents a halide selected from the group consisting of Br, Cl and combinations thereof, said method comprising the steps of:

• bringing in a deposition chamber, evacuated to 1 mbar or less and further adding an inert gas thereto, together with said substrate, multiple heatable containers containing CsX and a precursor compound or a combination of precursor compounds having as a composition CsxEuyX′x+αy, wherein X′ is a halide selected from the group of Cl, Br and I and combinations thereof, wherein x/y>0.25s, and wherein α≧2,
• further depositing on said substrate, by a method selected from the group consisting of physical vapor deposition, chemical vapor deposition and an atomization technique, said CsX:Eu stimulable phosphor,
• wherein said precursor compound or a combination of precursor compounds having as a composition CsxEuyX′x+3y or CsxEuyX′x+2y is present in a ratio to CsX that on said substrate a CsX:Eu storage phosphor is formed, wherein Eu is present as a dopant in an amount between 10−5 and 5 mol %.

A method for producing a phosphor screen or panel on a substrate containing a CsX:Eu stimulable phosphor, wherein X represents a halide selected from the group consisting of Br, Cl and combinations thereof, said method comprising the steps of:

• bringing in a deposition chamber, evacuated to 1 mbar or less, together with said substrate, multiple heatable containers containing CsX and a compound or a combination of precursor compounds having as a composition CsxEuyX′x+αy, wherein X′ is a halide selected from the group of Cl, Br and I and combinations thereof, wherein x/y>0.25, and wherein wherein α≧2,
• further depositing on said substrate, by a method selected from the group consisting of physical vapor deposition, chemical vapor deposition and an atomization technique, said CsX:Eu stimulable phosphor, wherein said precursor compound or a combination of precursor compounds have as a composition CsxEuyX′x+αy.