کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5400101 | 1505918 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photoluminescence properties of Ca3WO6:Eu3+ red phosphor
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Photoluminescence properties of Ca3WO6:Eu3+ red phosphor Photoluminescence properties of Ca3WO6:Eu3+ red phosphor](/preview/png/5400101.png)
چکیده انگلیسی
Novel Ca3WO6:Eu3+ phosphor has been synthesized with different Eu3+ doping concentrations through the solid-state reaction method, and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), photoluminescence (PL) spectra and decay curve. The results of XRD and SEM show that all Ca3WO6:Eu3+ samples are single phase and have irregular morphology. In the excitation spectrum of Ca3WO6:Eu3+ phosphor, the broad excitation band centering at 310Â nm is due to the combination of charge transfer from Eu3+ to O2â and W6+ to O2â. The intense red emission can be obtained under excitation into the 5D2 state with 465Â nm, which corresponds to the emission wavelength from blue light-emitting diodes (LEDs). The co-doped effect of alkali-metal ions (Li+, Na+, and K+) on the luminescence behavior of Eu3+-doped Ca3WO6 has been discussed in this paper. The luminescence properties suggest that novel Ca3WO6:Eu3+ phosphor may be a potential red phosphor for white LEDs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 142, October 2013, Pages 116-121
Journal: Journal of Luminescence - Volume 142, October 2013, Pages 116-121
نویسندگان
Shaoan Zhang, Yihua Hu, Li Chen, Xiaojuan Wang, Guifang Ju, Yan Fan,