Synthesis Photoluminescence analysis of Eu~(3+)activated Zn_2GeO_4phosphor

摘要

The present paper discusses an important phosphor material which is Zn_2GeO_4. The phosphor is prepared by taking appropriate quantities of ZnO and GeO_2 of AR grade.This completes solid state reaction. It is important to note here there is no evolving of the gases. Therefore this solid state reaction can be called as Green chemistry route. The phosphor Zn_2GeO_4: Base and Eu(0.5%) is Excited with 250, 255, 260, 265, 270, 275 nm the PL emission is found around 480nm. For 260nm excitation the PL emission intensity of 400nm peak is increased by 75%. It can be stated that the increase PL emission peak intensity of 480nm peak is due to Eu~(3+) present in Zn_2GeO_4. This PL emission intensity may be due to the emission from Eu~(3+) and or the energy transfer Eu~(3+) to Ge. One of its promising applications is to be used as phosphors in display technology such as field emission display which is considered to be the next generation flat panel displays.