Self-reduction mechanism and luminescence properties of Eu2+-Eu3+ doped strontium pyrophosphate

A series of Sr2P2O7:Eu2+-Eu3+ phosphors were successfully synthesized by the high temperature solid state method. The experimental results show that the existence of different network formers (SiO2, GeO2) has a certain influence on the microstructure and luminescent properties of the phosphor. It is interesting that the addition of SiO2 and GeO2 can dramatically improve the luminous intensity of Eu2+. By introducing Li+ or Na+ to compensate for vacancy defects, the purpose of harmonizing the luminescent color of the phosphor can be achieved. In this paper, Eu2+ / Eu3+ co-activated Sr2P2O7 phosphors have good luminous properties and can be adjusted through a variety of channels. Therefore, Sr2P2O7: Eu2+-Eu3+ phosphors can be an ideal choice for a new type of luminescent material.

Automated summary

The experimental results show that the addition of different network formers can improve the performance of phosphors, while compensating for vacancy defects can harmonize the luminescent color. Therefore, Sr2P2O7: Eu2+-Eu3+ phosphors have the potential to be widely used in various applications.