Safety Mark, comprising at least a Luminescent substance for the assurance of The authenticity of a security elementNiobatos comprising alkali metal and Alkaline Earth Metal and Wood Storks; factor of safety; use of a Security Mark and Method for verifying authenticity of a Brand.

摘要

The invention relates to a security feature having a luminescent substance with the general formula AXO3:Z (I) or B0.5XO3:Z (II) or A1-2yByXO3:Z (III), where A is an alkali metal, B is an alkaline earth metal, X stands for Nb or Ta, Z is the luminescence activator, and y lies between 0 and 0.5. The invention also relates to a security element, a security paper and a value document which is equipped with the security feature according to the invention, and to the use of the luminescent substance with the general formula (I), (II) or (III) as a feature substance for authentication. The luminescent substance is obtained by annealing solid starting materials.