کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9829460 | 1524491 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sol-gel combustion synthesis and luminescent properties of nanocrystalline YAG:Eu3+ phosphors
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Sol-gel combustion synthesis and luminescent properties of nanocrystalline YAG:Eu3+ phosphors Sol-gel combustion synthesis and luminescent properties of nanocrystalline YAG:Eu3+ phosphors](/preview/png/9829460.png)
چکیده انگلیسی
Eu3+-doped Y3Al5O12 (YAG:Eu3+) phosphors were synthesized by a facile sol-gel combustion method. In this process, citric acid traps the constituent cations and reduces the diffusion length of the precursors. YAG phase is obtained through sintering at 900 °C for 2 h. There were no intermediate phases such as YAlO3 (YAP) and Y4Al2O9 (YAM) observed. The charge transfer band of nanocrystalline phosphors shows a shift toward the high-energy side, compared with that of amorphous ones due to lower covalency of Eu-O bond for nanocrystalline phosphors. The higher concentration quenching in YAG:Eu3+ nanophosphors may be caused by the confinement effect on resonant energy transfer of nanocrystalline. It also indicates that the sol-gel combustion synthesis method provides a good distribution of Eu3+ activators in YAG host.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Crystal Growth - Volume 283, Issues 1â2, 15 September 2005, Pages 257-262
Journal: Journal of Crystal Growth - Volume 283, Issues 1â2, 15 September 2005, Pages 257-262
نویسندگان
Guodong Xia, Shengming Zhou, Junji Zhang, Sumei Wang, Yanmei Liu, Jun Xu,