| 摘要 |
The invention relates to a security feature which has a luminescence material of the general formula AXO<sub>3</sub>: Z (I) or B<sub>0.5</sub>XO<sub>3</sub> : Z (II) or <sub>1-2γ</sub> <sub>γ</sub>ΧO<sub>3</sub> : Z (III), in which A is an alkali metal, B is an alkaline earth metal, X stands for Nb or Ta, Z is the luminescence activator, and y is between 0 and 0.5. The invention also concerns a security element, a security paper, and a value document which is equipped with the security feature according to the invention. The invention further relates to the use of the luminescence material of general formula (I), (II) or (III) as material for a feature for ensuring authenticity. The luminescence material is obtained by the annealing of solid starter materials. |
