کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5186490 | 1381106 | 2006 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Luminescent Nd3+ doped silicone-urea copolymers
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A simple method for the preparation of rare earth ion-doped polymers, which display luminescence, is reported. For this purpose silicone-urea copolymers were doped with Nd(NO3)3·6H2O. Various structural and physicochemical properties of the resultant materials were investigated. FTIR studies indicated strong interaction of Nd3+ ions with urea groups, but no interaction with siloxane backbone, which is expected. Absorption measurements in the visible and near infrared region were performed and the radiative decay rates and branching ratios for the meta-stable 4F3/2 level were determined by using Judd-Ofelt theory. The samples were also excited at 800 nm and emission spectra were observed in the near infrared at 905, 1059, and 1331 nm. In Nd3+ doped silicone-urea systems the highest emission cross section at 1059 nm was determined to be 60.7Ã10â21 cm2. Spectroscopic parameters determined in this study suggest that Nd3+ doped silicone-urea copolymers are promising candidates for the development of fiber lasers or amplifiers near 1.06 and 1.3 μm.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 47, Issue 4, 8 February 2006, Pages 982-990
Journal: Polymer - Volume 47, Issue 4, 8 February 2006, Pages 982-990
نویسندگان
Umit Demirbas, Adnan Kurt, Alphan Sennaroglu, Emel Yilgör, Iskender Yilgör,