Photoluminescence of phosphors for PDP with VUV excitation

Synthesis of Nanosized Luminescent Materials and Their Photoluminescence under VUV Excitation

“…However, nanophosphors usually would agglomerate after thermal treatment, which means that the morphology was broken and the particle size growth up. For YBO 3 :Eu 3+ , the color purity would decrease as particle size growth up. On the other hand, the ideal phosphor would have the smaller size, high luminescence intensity, good color purity and well dispersion.…”

“…However, all of these advantages do not make YBO 3 :Eu 3+ as a desired VUV phosphor because of its poor chromaticity. In the emission spectra of YBO 3 25 and it is the ''thermodynamic-stable species'' that could only be obtained under harsh conditions, so no efficient control over their size and morphology has been achieved yet. 24 Many works have been reported for preparing the different morphology and size of YBO 3 :Eu 3+ nanophosphor.…”

“…YBO 3 :Eu 3+ is a promising red phosphor owing to its high ultraviolet (UV) and VUV transparency, non-linear properties and exceptional optical damage threshold which allows it to withstand the harsh conditions presenting in vacuum discharge lamps or screens. 19 In particular, it exhibits extraordinarily high luminescent efficiency under VUV excitation.…”

“…Comparing with several common luminescence techniques, the luminescent efficiency of PDP is lowest. 3 luminescence techniques luminescent efficiency (lm/W) Fluorescent lamp 80 100 cathode ray tube (CRT) 5 6 LCD 2 3.5 PDP 1 1.5 2+ was too long for the application, while the instability of BaMgAl10O17:Eu2+ under VUV radiation and thermal treatment was an outstanding problem during panel manufacture (Tab. 2).…”

“…For instance, the 3 h sample and 15 h sample have the strongest intensity in the series samples under UV excitation, but under VUV excitation, they are almost the lowest. From XRD and electron microscopy results, we could consider that the particle sizes of the YBO 3 …”