Valuable document

1. A luminescent substance with the general formula

XZO 4

X stands for Sc a Y b La c Ce d Pr e Nd f Sm g Eu h Gd i Tb k Dy l Ho m Er n Tm o Yb p Lu q Sb(III) r Bi s Cr t Mn(III) u Fe(III) v [Ba w Fe(II) y Ca z Sn(II) α Sr β Co γ Ni δ Cu ε ] 3/2 [Na η K λ ] 3 [U(IV) μ Pb π Th σ ] 3/4 U(VI) φ/2 and

Z stands for Nb za Ta zb V zc P zd [Ti ze Zr zf Sn(IV) zg ] 5/4 W zhs/6 Fe(III) zis/3 and

a+b+c+d+e+f+g+h+i+k+l+m+n+o+p+q+r+s+t+u+v+3/2(w+x+y+z+α+β+γ+δ+ε)+3(η+λ)+3/4(μ+π+σ)+φ/2=1, and

a, b, c, d, e, f, g, h, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z, α, β, γ, δ, ε, η, λ, μ, π, σ and φ each range from 0 to 1, and

za+zb+zc+zd+5/4 (ze+zf+zg)+5/6zh+5/3zi=1, and

za, zb, zc, zd, ze, zf, zg, zh and zi each range from 0 to 1, and further wherein m≠0 and/or n≠0 and/or f≠0.

2. A luminescent substance according to claim 1 , wherein b≠0 and/or c≠0 and/or k≠0 and/or o≠0.

3. A luminescent substance according to claim 1 , wherein b+c=1 and 0<b<1 and 0<c<1.

4. A luminescent substance according to claim 1 , wherein c=1 or b=1.

5. A luminescent substance according to claim 1 , wherein

X stands for Y b La c Pr e Nd f Dy l Ho m Er n Yb p Cr t Mn(III) u Fe(III) v [Mn(II) x Fe(II) y Co γ Ni δ Cu ε ] 3/2 , and

b+c+e+f+l+m+n+p+t+u+v+3/2(x+y+γ+δ+ε)=1, and

b, c, e, f, l, m, n, p, t, u, v, x, y, γ, δ, ε each range from 0 to 1 and

wherein at least one of f, m, n, and p is >0.

6. A luminescent substance according to claim 1 , wherein c≠0 and/or d≠0 and/or e≠0 and/or g≠0 and/or h≠0 and/or i≠0 and/or k# 0 and/or l≠0 and/or o≠0 and/or q≠0.

7. A luminescent substance according to claim 1 , wherein (n≠0 and p≠0) or (f≠0 and p≠0) or (n≠0 and f≠0).

8. A luminescent substance according to claim 1 , wherein if m≠0 or n≠0 or p≠0, then it holds that e≠0 and/or l≠0 and/or f≠0 and/or t≠0 and/or u≠0 and/or v≠0 and/or x≠0 and/or y≠0 and/or γ≠0 and/or δ≠0 and/or ε≠0.

9. A luminescent substance according to claim 1 , wherein if f≠0, then it holds that e≠0 and/or l≠0 and/or t≠0 and/or u≠0 and/or v≠0 and/or x≠0 and/or y≠0 and/or γ≠0 and/or δ≠0 and/or ε≠0.

10. A luminescent substance according to claim 1 , wherein X stands for Y b La c Pr e Nd f Er n Yb p Fe(III) v , and

b+c+e+f+n+p+v=1, and

b, c, e, f, n, p and v each range from 0 to 1, and

wherein at least one of f, n, and p>0.

11. A luminescent substance according to claim 1 , wherein X stands for Y b Yb p Pr e , b+e+p=1, and wherein b and e range from 0 to 1 and 0<p<1.

12. A luminescent substance according to claim 1 , wherein X stands for Y b Nd f Fe(III) v , b+v+f=1, and wherein b and v range from 0 to 1 and 0<f<1.

13. A luminescent substance according to claim 1 , wherein X stands for Y b Er n , b+n=1, and wherein b ranges from 0 to 1 and 0<n<1.

14. A luminescent substance according to claim 1 , wherein X stands for Y b Nd f Er n , b+f+n=1, and wherein b, f and n each range from 0 to 1, wherein at least one of f and n is 0.

15. A luminescent substance according to claim 1 , wherein X stands for Y b Yb p Nd f , b+p+f=1, and wherein b, p and f each range from 0 to 1, wherein at least one off and p is >0.

16. A luminescent substance according to claim 1 , wherein X stands for Y b Nd f , b+f=1, and b ranges from 0 to 1 and 0<f<1.

17. A luminescent substance according to claim 1 , wherein X stands for Y b Yb p , b+p=1, and b ranges from 0 to 1 and 0<p<1.

18. A luminescent substance according to claim 1 , wherein the luminescent substance is additionally doped with Al and/or Mg and/or Cr.

19. A luminescent substance according to claim 1 , wherein the luminescent substance is additionally doped with (Al and Mg) or (aluminum and Cr).

20. A luminescent substance according to claim 1 , wherein za≠0 and/or zb≠0 and/or ze≠0 and/or zh≠0.

21. A luminescent substance according to claim 1 , wherein Z stands for Nb za Ta zb P zd , za+zb+zd=1, and 0<za<1, 0<zb<1 and 0<zd<1.

22. A luminescent substance according to claim 1 , wherein Z stands for Nb za Ta zb , za+zb=1, and 0<za<1 and 0<zb<1.

23. A luminescent substance according to claim 1 , wherein Z stands for Nb with za=1 or Ta with zb=1 or P with zd=1.

24. A security element comprising a luminescent substance according to claim 1 .

25. A security element according to claim 24 , wherein the security element has the form of a strip or band.

26. A security element according to claim 24 , wherein the security element is formed as a security thread, planchet or mottling fiber.

27. A security element according to claim 24 , wherein the security element is formed as a label.

28. A security element according to claim 24 , wherein the at least one luminescent substance is embedded into a supporting material of the security element or applied to the supporting material.

29. A test method for checking the authenticity of a security element according to claim 24 , comprising evaluating the wavelengths and/or number and/or the form and/or the intensities of the emission lines and/or the excitation bands of the luminescent substances.

30. A test method for checking the authenticity of a security element according to claim 24 , wherein the lifetimes of luminescence of the luminescent substances are evaluated.

31. A security paper comprising a luminescent substance according to claim 1 .

32. A value document comprising a luminescent substance according to claim 1 .

33. A value document according to claim 32 , wherein the value document comprises paper or plastic.

34. A value document according to claim 32 , wherein the luminescent substance is incorporated into the volume of the value document or present in a layer applied to the value document.

35. A value document according to claim 32 , wherein the luminescent substance is provided as an invisible coating at least partly covering the surface of the value document.

36. A value document according to claim 32 , wherein the luminescent substance is admixed to a printing ink.

37. A value document according to claim 32 , wherein the coating has the form of one or more strips.

38. A value document according to claim 32 wherein the luminescent substance is present as pigment particles.

39. A method for producing a value document according to claim 32 , wherein the luminescent substance is added to a printing ink.

40. A method for producing a value document according to claim 32 , wherein the luminescent substance is applied by a coating process.

41. A method for producing a value document according to claim 32 , wherein the luminescent substance is incorporated into the volume of the value document.

42. A method for producing a value document according to claim 32 , wherein the luminescent substance is supplied to the value document by accordingly prepared mottling fibers.

43. A method for producing a value document according to claim 32 , wherein the luminescent substance is supplied to the value document by an accordingly prepared security thread.

44. A test method for checking the authenticity of a value document according to claim 32 , comprising evaluating the wavelengths and/or number and/or the form and/or the intensities of the emission lines and/or the excitation bands of the luminescent substances.

45. A test method for checking the authenticity of a value document or security element according to claim 44 , wherein the emission lines and/or excitation bands represent a coding.

46. A test method for checking the authenticity of a value document according to claim 32 , wherein the lifetimes of luminescence of the luminescent substances are evaluated.