Synthesis And Luminescence Of Rare Earth Ion Doped Phosphors For PDPs

This work was supported by the National Natural Science Foundation of China (Grant No. 50172046, 50102006), The National High Technology Research and Development Program (863 Program) (Grant No.2002AA311160), and Natural Science Foundation of Jilin Province (Grant No. 20030514-2).Phosphors are important one of the factors influencing the color plasmas display panels (PDP) device performance. There are some limitation about the widely-using phosphors for PDPs. The commercial red emitting PDP phosphor (Y,Gd)BO3:Eu3+ has main emissions peaked at 593nm, which is corresponding to the transitions of 5D0→7F1. Its color purity is not satisfied. Y2O3:Eu3+ phosphor, having better color purity, but its luminescence efficiency is lower. The commercial blue-emitting phosphor BaMgAl10O17:Eu2+ (BAM) represented high quantum efficience with a very low stability (life) with VUV flux. The peak maximum also shifts towards the green during various stages of panel fabrication, known as green shift. The decay times of Zn2SiO4:Mn2+ phosphor is somewhat longer for practical application.Therefore, with rare earth ions such as Eu3+, Tm3+ and Ce3+/Tb3+ selected as activators, red, blue and green emitting phosphors for PDP were synthesized by coprecipitation reaction and solid state reaction respectively. The XRD, SEM, TG-DTA, excitation and emission spectra were employed to study the phosphor samples. The creative works are as follows:(1) The fine particles Y(P,V)O4:Eu3+ with good regular morphology have been prepared successfully by coprecipitation reaction. There exists energy transfer between VO43- group and Eu3+ ion. The most intense emission peaks for the phosphor is observed around 619nm. The studied phosphor has a higher ratio of orange to red (increasing by 1.52 to 3.33), better red emission color purity, and comparable luminescence efficiency with the commercial...