You may use La3+ (Lanthanum) for sensitization of other rare earth ions like Eu3+, Ce3+. There are few reports on this. To the best of my knowledge, La3+ dont have photoluminescent property.
Well, La has very low phonon cut off energy. Meaning, it's very likely that excitation energy will be readily lost in the form of non-radiative phonons. So, you will not be able to see a photoluminescent signal from the decay through La. It can rather be used as a sensitizer as Rupesh suggested above, in which case excitation energy will be transferred to the annihilator ions and you will see colored emission from those metal centers.
Hi, lanthanum (La) doest not have luminescent properties however it can be used as a sensitizer.
Hi all, I need your help. What can be reason of strong increase in the luminescence efficiency of other rare earth element in combination with introduction of lanthanum to this combination. It is known that the element of lanthanum is can’t be center of the luminescence(La3+ possesses a relatively stable empty 4f shell). There are several reports of this so that La3 + (lanthanum) can be used to sensitize other rare-earth ions. The reason?
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