کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5402360 | 1392732 | 2010 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and luminescent properties of oleic acid (OA)-modified CaF2: Eu nanocrystals
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The OA-modified CaF2: Eu nanocrystals that can be well dispersed in chloroform to form a clear solution were synthesized and characterized. The nanocrystals have a roughly spherical shape with particle diameter of about 10 nm. Possible mechanism was proposed to explain the growth process. Upon the excitation at 395 nm, the room-temperature emission spectrum of the nanocrystals in chloroform presents the characteristic transitions 5D0â7FJ of Eu3+ ions, with 5D0â7F2 (610 nm) transition as the most prominent group. The luminescence decay of Eu3+ ions in CaF2 nanocrystals was also investigated and two luminescence lifetimes of 737 μs (11.2%) and 2.08 ms (88.8%) were obtained.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 130, Issue 7, July 2010, Pages 1179-1182
Journal: Journal of Luminescence - Volume 130, Issue 7, July 2010, Pages 1179-1182
نویسندگان
Limei Song, Jianhua Gao, Ruijuan Song,