کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1539703 | 996642 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Radiative quantum efficiency of CdSe/ZnS core-shell colloidal solutions: Size-dependence
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
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چکیده انگلیسی
Thermo-optical parameters of CdSe/ZnS core-shell nanoparticles suspended in toluene were measured using a thermal lens (TL) technique. TL transient measurements were performed using the mode-mismatched dual-beam (excitation and probe) configuration. A He–Ne laser at λp = 632.8 nm was used as the probe beam and an Ar+ laser (at λe = 514.5 nm) was used as the excitation beam for studies as a function of both core size and concentration of CdSe/ZnS nanocrystals. The fraction thermal load (φ) and radiative quantum efficiencies (η) of the CdSe/ZnS were determined. Dependence on core size (∼2–5 nm) and concentration (∼0.01–0.62 mg/ml) was observed for both φ and η parameters.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 281, Issue 23, 1 December 2008, Pages 5925–5928
Journal: Optics Communications - Volume 281, Issue 23, 1 December 2008, Pages 5925–5928
نویسندگان
Viviane Pilla, Leandro P. Alves, Marcos T.T. Pacheco, Egberto Munin,