کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5400994 | 1505924 | 2013 | 4 صفحه PDF | دانلود رایگان |
The surface of Y3Al5O12:Ce3+ phosphor prepared by solid-state reaction was modified by hydrofluoric acid wet etching. The SEM pictures show that the edge-angles-rich surface of the phosphor particles becomes smooth and the XRD spectra show that the surface crystallinity is improved after modification for more than 3Â h. Consequently, the photoluminescence emission from phosphor particles with smooth surface presents a higher quantum yield (increased by 5.5%) than that without modification, and a lower backscattering light by the smoothed phosphor particles is also found, which suggests better surface characteristics of light absorption, transparency and crystallinity.
⺠HF wet etching way is introduced to modify the YAG phosphor surface for the first time. ⺠The surface with riched edge angles has become smooth. ⺠The photoluminescence emission intensity is increased by 5.5%. ⺠The backscattering light intensity is obviously decreased. ⺠The wet etching method with HF is appropriate for mass process.
Journal: Journal of Luminescence - Volume 136, April 2013, Pages 351-354