کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5438244 | 1398182 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Red, green and blue-violet emission coexistence in white-light-emitting Ca3SiO4Cl2:Bi3+, Li+, Eu2+, Eu3+ phosphor
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Red, green and blue-violet emission coexistence in white-light-emitting Ca3SiO4Cl2:Bi3+, Li+, Eu2+, Eu3+ phosphor Red, green and blue-violet emission coexistence in white-light-emitting Ca3SiO4Cl2:Bi3+, Li+, Eu2+, Eu3+ phosphor](/preview/png/5438244.png)
چکیده انگلیسی
A series of emission-tunable Ca3SiO4Cl2:Bi3+, Li+, Eun+(n =2, 3) (CSC:Bi3+, Li+, Eun+) phosphors have been synthesized via sol-gel method. The X-ray diffraction results indicate that the as-synthesized phosphors crystallize in a low temperature phase with the space group of P21/c. Energy transfer from Bi3+ to Eu3+/Eu2+ exists in CSC:Bi3+, Li+, Eun+ phosphors. Under the excitation of 327 or 365Â nm, the Ca2.98âySiO4Cl2:0.01Bi3+, 0.01Li+, yEun+(y=0.0001-0.002) phosphors show an intense green emission band around 505Â nm, while under the excitation of 264Â nm, three emission bands centered around 396Â nm (Bi3+), 505Â nm (Eu2+) and 614Â nm (Eu3+) are observed and tunable colors from blue-violet to green or white are achieved in these phosphors by varying the content of Eu. White-light emission with the color coordinate (0.312, 0.328) is obtained in Ca2.978SiO4Cl2:0.01Bi3+, 0.01Li+, 0.002Eun+(n =2, 3). Based on these results, the as-prepared CSC:Bi3+, Li+, Eu2+, Eu3+ phosphors can act as color-tunable and single-phase white emission phosphors for potential applications in UV-excited white LEDs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Issue 2, 1 February 2017, Pages 1937-1942
Journal: Ceramics International - Volume 43, Issue 2, 1 February 2017, Pages 1937-1942
نویسندگان
Xiuzhen Xie, Minzhen Zhong, Xiangqi Li, Xiao Wu, Haiting Wei,