Luminescence Property of ZnS:Mn,Mg Phosphor with Excitation of Plasma Blue Light Source

Abstract

In this paper, we investigated the effect of luminescence properties of various concentrations of magnesium-doped ZnS:Mn phosphor excited by plasma luminescence device. The PL intensity was evaluated in the range of 300~500 nm excitation wavelengths. We found the highest PL intensity of the phosphors excited by 365 nm and 450 nm was observed at Mg concentrations of 1.4 wt% and 0.8 wt%, respectively. In addition, an emission peak was distinguished at 580 nm wavelength. With increasing Mg dopant level, enhanced PL intensity was observed, which is possibly applicable to color converting materials by blue emission for white light sources. Finally, we evaluated the luminance properties of color converting ZnS:Mn,Mg phosphors with plasma blue light source. the white luminance of plasma light source with CIE(0.36,0.26) was established by color converting phosphors of ZnS:Mn with 0.8 wt% Mg.

Luminescent properties of fine-dispersed self-propagating high-temperature synthesized ZnS:Cu,Mg

“…Furthermore, introduction of magnesium can change the phase ratio in ZnS [19]. It is well known [11,20] that introduction of copper usually stabilizes the cubic phase, but introduction of magnesium stabilizes the hexagonal phase, according to [21]. Therefore, since both copper centers include Cu Zn , it is quite possible that simultaneous decrease of green and blue bands is caused by copper shifting from the main position into the interstitial site due to deformation or to the change of lattice symmetry.…”

“…act as a flux [21,24,25]. According to [4,11], it may contribute to introduction of an activator (copper or some other dopants) into lattice of luminophore.…”

Кластеризация марганца в ZnS : Mn, Mg, полученного методом высокотемпературного самораспространяющегося синтеза

“…Кроме того, было обнаружено, что дополнительное легирование магнием улучшает электролюминесцентные характеристики тонкопленочных устройств на основе ZnS : Cu и ZnS : Mn, а также приводит к увеличению интенсивности фотолюминесценции (ФЛ) сульфида цинка [10,11].…”