کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1678437 | 1009941 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of reaction temperatures and media on crystal structure of colloidal nanocrystals synthesized from an aerosol flow system
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of reaction temperatures and media on crystal structure of colloidal nanocrystals synthesized from an aerosol flow system Effect of reaction temperatures and media on crystal structure of colloidal nanocrystals synthesized from an aerosol flow system](/preview/png/1678437.png)
چکیده انگلیسی
The CdSe and CdTe nanocrystals were successfully synthesized from the ultrasonic-assisted aerosol flow system using a surfactant/solvent system of oleic acid (OA)/trioctylphosphine (TOP)/trioctylphosphine oxide (TOPO)/octadecene (ODE). A comprehensive examination on the control of the CdSe and CdTe crystal structures and optical properties was performed as functions of reaction temperatures and amount of reaction media in the aerosol flow system. CdSe nanocrystals with spherical shape and having zinc blende structure were produced. It was found that the crystal structure and shape of CdSe are not affected by reaction temperature. However, it was found that reaction temperature significantly affects the crystal structure and morphology of CdTe. Zero-dimensional CdTe nanocrystals with spherical shape and having zinc blende structure were obtained at the temperature higher than 300 °C. Three-dimensional tetrapod-shaped CdTe nanocrystals having wurtzite structure were obtained at the temperature lower than 250 °C. Furthermore, the anisotropic growth was observed to be enhanced as increasing the amount of OA used at the temperature of 250 °C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultramicroscopy - Volume 108, Issue 10, September 2008, Pages 1278-1282
Journal: Ultramicroscopy - Volume 108, Issue 10, September 2008, Pages 1278-1282
نویسندگان
Dae-Jin Kim, Hee Dong Jang, Eui Jung Kim, Kee-Kahb Koo,