摘要
釆用高温固相法制备了NaCaPO4∶Dy3+系列样品,并在紫外(UV)及真空紫外(VUV)区域研究了系列样品的发光性能.紫外激发光谱显示在350nm处有最强的激发峰,可以有效地吸收紫外光并将其转化为可见光.真空紫外激发光谱表明,NaCaPO4∶Dy3+能有效地吸收无汞荧光灯的激发源并将其转化为可见光.系列样品发光均呈现为白色,这种材料有潜力作为全色显示材料应用于发光二极管(LED)和无汞荧光灯中.
A series of single-phase full color phosphors, NaCaPO4： Dy3＋ was prepared using conventio-nal solid state reaction. The luminescent properties were studied under ultraviolet （UV） and vacuum ultraviolet （VUV） excitation. The UV excitation spectra reveal that the samples have a series of peaks at around 250- 500 nm, with the highest peak at around 350 nm. The samples can absorb the emission of ultraviolet photons and emit visible light efficaciously. The VUV excitation spectra of the samples reveal that there are absorption bands at VUV region. The samples can absorb the vacuum ultraviolet photons and translate to visible light efficaciously. All the chromaticity coordinates of the samples are in the white region under both UV and VUV excitation. It can be predicted that this novel material can be applied both in LEDs and in mercury-free fluorescent lamp.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2010年第1期26-29,共4页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:10874061)
广东省产学研项目(批准号:0712226100023)
高等学校博士学科点专项科研基金(批准号:200807300010)资助
关键词
荧光粉
磷酸盐
UV光谱
VUV光谱
发光二极管(LED)
无汞荧光灯
Phosphor
Phosphate
Ultraviolet spectrum
Vacuum ultraviolet spectrum
Light emitting diode
Mercury-free fluorescent lamp
