کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5402854 | 1392744 | 2010 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Acetate reduction synthesis of Sr2Si5N8:Eu2+ phosphor and its luminescence properties
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
A novel synthesis method was developed for the efficient red phosphor, Eu2+-activated Sr2Si5N8, by employing the strontium acetate as both the reducing agent and strontium source. The phase purity of final product was strongly dependent on the heating rate of the precursors. Sr2Si5N8:Eu2+ (2Â at%) phosphor presented a broadband excitation spectrum in the range 300-500Â nm, matching well with the blue emission (400/460Â nm) of current InGaN light-emitting diodes (LEDs). The red emission peaking at 619Â nm gave the relatively high (about 155%) intensity compared with the Y3Al5O12 (YAG) (P46-Y3) standard phosphor. In addition, the saturated chromatic coordinates (0.638, 0.359) allowed it a promising candidate as a red phosphor in white LEDs application for illumination or display.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 130, Issue 1, January 2010, Pages 8-12
Journal: Journal of Luminescence - Volume 130, Issue 1, January 2010, Pages 8-12
نویسندگان
Xianqing Piao, Ken-ichi Machida, Takashi Horikawa, Bonggoo Yun,