کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1547257 997631 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Size-dependent electronic energy relaxation in a semiconductor nanocrystal in the strong confinement limit
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Size-dependent electronic energy relaxation in a semiconductor nanocrystal in the strong confinement limit
چکیده انگلیسی

The size dependence of the electronic energy relaxation in a quantum dot is considered. The Förster energy transfer from an exciton in a quantum dot to a surface state of the dot is considered as a dominant channel of the electronic energy relaxation in a quantum dot. For the consideration of the relaxation mechanism, a microscopic quantum mechanical description of the exciton in the quantum dot and a macroscopic description of the surface state of the quantum dot are employed. From this analysis, it is shown that the relaxation rate increases as the radius R   of the quantum dot decreases and the rate has 1/Rc1/Rc dependence in the strong confinement regime, where c is considered to be a fraction between 3 and 4.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 31, Issue 1, January 2006, Pages 48–52
نویسندگان
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