Conversion substance, mixture of substances, process for the production of a conversion substance and radiation-emitting component

A mixture of substances comprising a conversion substance of the general formula

• RE13-xRE2x(Sc5-y-zAlyGaz)O12, wherein
• RE1 is an element or a combination of elements selected from the group of rare earth elements,
• RE2 is an element or a combination of elements selected from the group of rare earth elements,
• RE1 and RE2 are selected differently from each other, and it is 025<x<0.65, 0≤y≤5, 0<z≤5 and y+z≤5,
• and a light-emitting substance, the light-emitting substance having the general formula
• RE13-kRE2k(Al,Ga)5O12, wherein
• RE1 is an element or a combination of elements selected from the group of rare earth elements,
• RE2 is an element or a combination of elements selected from the group of rare earth elements,
• RE1 and RE2 are selected differently from each other, and it is 0<k≤0.2.

A process for the production of a conversion substance of the general formula RE13-xRE2x(Sc5-y-zAlyGaz)O12, wherein

• RE1 is an element or a combination of elements selected from the group of rare earth elements,
• RE2 is an element or a combination of elements selected from the group of rare earth elements,
• RE1 and RE2 are selected differently from each other, and it is 025<x<0.65, 0≤y≤5, 0<z≤5 and y+z≤5, comprising the steps of
• providing a mixture of reactants selected from a group comprising oxides, nitrides, carbonates, nitrates, oxalates, citrates and hydroxides, each of RE1, RE2, Sc, Al and Ga, and combinations thereof,
• homogeneous mixing of the reactants,
• heating the reactants to a temperature selected from the range including 1200° C. to including 1900° C.