Portal de Periódicos da CAPES

Luminescent properties of REBa 3 B 9 O 18 (RE = Lu, Tb, Gd, Eu) under VUV excitation

2005; Institute of Physics; Volume: 38; Issue: 19 Linguagem: Inglês

10.1088/0022-3727/38/19/005

1361-6463

Chengjun Duan, Junlin Yuan, Xin‐Xin Yang, Jing‐Tai Zhao, Yibing Fu, Guobin Zhang, Zeming Qi, Shi Zhao-Shu,

Glass properties and applications

The VUV excited luminescent properties of REBa3B9O18 (RE = Lu, Tb, Gd, Eu) were investigated. The bands near 160 nm in the VUV excitation spectra of those compounds are attributed to the host absorptions; at the same time, the energy of host absorption is shifted to a higher energy region with decreasing RE3+ radius. It is observed that there is energy transfer between the hosts and luminescent centres (e.g. Tb3+, Gd3+ and Eu3+). From the standpoints of colour purity and luminescent efficiency, the phosphor of TbBa3B9O18 is an attractive candidate for new green-emitting phosphors for plasma display panels and mercury-free fluorescent lamps.