The invention provides a La2Hf2O7
system inorganic luminous material. The molecular formula of the inorganic luminous material is Yb / Eu / Er: La2Hf2O7, and by mole percent, the
doping amount of Yb is 10-30%, the
doping amount of Eu is 1-10%, and the
doping amount of Er is 0.001-0.01%; and under the condition that the inorganic luminous material is excited by 980 nm, upconversion
green emission of Er3+ ions can be obtained, and under the condition that the inorganic luminous material is excited by
xenon lamps with the light of 298 nm, 365 nm and 415 nm, down-conversion red emission of Eu3+ is obtained. By the
system, upconversion
green emission and down-conversion red emission can be realized simultaneously by the
system, emission peaks source from different
rare earth ions, and have different spectral shapes, various
rare earth ions are simply mixed in some common matrix systems, due to large non-radiative cross relaxation probability of the
rare earth ions, upconversion light emitting and down-conversion light emitting are difficultly realized simultaneously, and therefore, the system can be applied to anti-counterfeit
label materials.