کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5402138 | 1392727 | 2011 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Excited states dynamics under high pressure in lanthanide-doped solids
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Excited states dynamics under high pressure in lanthanide-doped solids Excited states dynamics under high pressure in lanthanide-doped solids](/preview/png/5402138.png)
چکیده انگلیسی
The latest results on high pressure investigations of luminescence related to Pr3+ and Eu2+ in different lattices are briefly reviewed. The influence of pressure on anomalous luminescence and 4fnâ15d1â4fn luminescence in BaSrF2:Eu2+ and LiBaF3:Eu2+ systems and Pr3+ 4fnâ4fn emission quenching is presented and discussed. A theoretical model describing the impurity-trapped exciton as a system where a hole is localized at the impurity and an electron is captured by Coulomb potential at Rydberg-like states is developed. The results show the importance of local lattice relaxation for the creation of stable impurity-trapped exciton states. The ligands shifts create a potential barrier that controls the effect of mixing between the Rydberg-like electron and localized electron wave functions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 131, Issue 3, March 2011, Pages 433-437
Journal: Journal of Luminescence - Volume 131, Issue 3, March 2011, Pages 433-437
نویسندگان
Marek Grinberg,