کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5404136 | 1505932 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Non-linear optical response and relaxation dynamics in double-walled carbon nanotubes
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Non-linear optical response and relaxation dynamics in double-walled carbon nanotubes Non-linear optical response and relaxation dynamics in double-walled carbon nanotubes](/preview/png/5404136.png)
چکیده انگلیسی
Relaxation dynamics of photoexcited carriers in individually suspended double-walled carbon nanotubes in solution have been investigated using femtosecond pump-probe spectroscopy. The average diameters of inner and outer tubes are 1.4 and 2.2Â nm, respectively. The absorption spectrum reveals distinct band-to-band transitions in nanotubes with different diameters and chiralities. The differential absorption spectra measured by the pump-probe experiments show absorption bleaching and two-component decay behavior. The fast and slow components indicate carriers relaxation between the inner and outer tubes and non-radiative recombination of electrons and holes at the bottoms of the bands, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volumes 119â120, JulyâOctober 2006, Pages 8-12
Journal: Journal of Luminescence - Volumes 119â120, JulyâOctober 2006, Pages 8-12
نویسندگان
A. Nakamura, T. Tomikawa, M. Watanabe, Y. Hamanaka, Saito Saito, H. Ago,