کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1794328 1023695 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Crystallization kinetics of CdSe nanocrystals synthesized via the TOP–TOPO–HDA route
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Crystallization kinetics of CdSe nanocrystals synthesized via the TOP–TOPO–HDA route
چکیده انگلیسی

An effective trioctylphosphine–trioctylphosphine oxide–hexadecylamine (TOP–TOPO–HDA) route was used to investigate the crystallization kinetics of CdSe nanocrystals. A new diffusion-controlled growth model was founded to simulate the CdSe nanocrystals (NCs) growth process. It was found that the population density of the CdSe NCs in solution remained constant during the early stage of the growth before ripening. About 28% of the Cd was consumed during nucleation. The concentration of Cd decreased after nucleation and the Cd monomer was almost exhausted after 300 s growth. The diffusion coefficient was found to be ∼150 nm2/s. The apparent critical nucleus was estimated to be 1.64 nm by extrapolation of the modeling curve.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Crystal Growth - Volume 310, Issue 15, 15 July 2008, Pages 3504–3507
نویسندگان
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