کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7840123 | 1505864 | 2018 | 24 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Concentration self-quenching of luminescence in crystal matrices activated by Nd3+ ions: Theory and experiment
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Concentration self-quenching of luminescence in crystal matrices activated by Nd3+ ions: Theory and experiment Concentration self-quenching of luminescence in crystal matrices activated by Nd3+ ions: Theory and experiment](/preview/png/7840123.png)
چکیده انگلیسی
Resonance migration and cross-relaxation processes leading to concentration self-quenching of fluorescence have been studied theoretically and experimentally with Nd3+: LaF3 bulk crystal as an example. The time range of theoretical description of self-quenching kinetics has been expanded by including into consideration the long-range fluctuation stage that determines the slow luminescence quenching of donor centers isolated due to fluctuations of donor surroundings. New experimental data on fluorescence kinetics concentration dependence in a Nd3+:LaF3 bulk crystal are consistently described with single set of energy migration CDD and cross-relaxation CDA microparameters. The obtained results is the first step to solve the problem of quenching in RE doped nanocrystals where, along with self-quenching, the quenching by additional acceptors namely, various molecular groups, residing in the volume of the nanoparticles have to be accounted.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 198, June 2018, Pages 138-145
Journal: Journal of Luminescence - Volume 198, June 2018, Pages 138-145
نویسندگان
S.G. Fedorenko, A.V. Popov, E.A. Vagapova, A.E. Baranchikov, Yu.V. Orlovskii,