کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
597021 | 1454056 | 2008 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Early time ripening during the growth of CdSe nanocrystals in liquid paraffin Early time ripening during the growth of CdSe nanocrystals in liquid paraffin](/preview/png/597021.png)
The growth process of CdSe nanocrystals synthesized in paraffin hot-matrix is studied. The complex combination of nucleation, growth and ripening processes in the first stages of nanocrystal growth is known as early time ripening. It is found that the early time ripening depends on the synthesis temperature and the concentration of Se-precursor (tributhylphosphine selenide). Higher synthesis temperatures promote early time ripening thus leading to the formation of larger nanocrystals with lower concentration in the reaction solution. Increasing the Se-precursor concentration at 210 °C dramatically increases the nanocrystals concentration, but does not affect significantly their size. However, the larger amount of Se-precursor at 240 °C leads to larger nanocrystals size, although it has a little effect on the nanocrystal concentration.
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 316, Issues 1–3, 5 March 2008, Pages 37–45