A luminescent substance and a printed value document comprising thereof

Abstract

The invention relates to a printed value document having at least one luminescent substance. More specifically, a luminescent substance with the general formula XZO4 where X stands for YbLacPreNcifErnYbpFe(111) and b+c+e+f+n.i-p+v,=1 and b, c, e, f, n, p and v each range from 0 to 1, wherein (n≠0 and p≠0)) or (f≠0 and p≠0) or (n≠0 and f≠0), Z stands for NbzaTazbPzd and Za+zb+zd=1, and za, zb, and zd each range from 0 to 1, is disclosed.