کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5375630 | 1504308 | 2008 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Interaction between excitons determines the non-linear response of nanocrystals
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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: Interaction between excitons determines the non-linear response of nanocrystals Interaction between excitons determines the non-linear response of nanocrystals](/preview/png/5375630.png)
چکیده انگلیسی
The non-linear response of semiconductor quantum dots is investigated using three-pulse photon echo peak shift (3PEPS) experiments and simulations. The third-order non-linear response is modeled by a three-level system, utilizing Brownian oscillators to model the line-broadening functions. Our results show that biexciton formation and exciton-exciton scattering significantly influence the non-linear response of quantum dots. The exciton to biexciton excited state absorption pathways are also investigated for quantum dots with different crystal structures. Our calculations suggest that the probability of excited state absorption to the biexcitonic state is higher for zinc-blende structured nanocrystals.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Physics - Volume 350, Issues 1â3, 23 June 2008, Pages 56-68
Journal: Chemical Physics - Volume 350, Issues 1â3, 23 June 2008, Pages 56-68
نویسندگان
Mayrose R. Salvador, P. Sreekumari Nair, Minhaeng Cho, Gregory D. Scholes,