A Systematic Study on Preparing CdS Quantum Dots

作者：Huy B T^*; Seo Min Ho; Lim Jae Min; Shin Dong Soo; Lee Yong Ill; Kim Sang Su; Jang Kiwan; Song Taekwon

来源：Journal of the Korean Physical Society, 2011, 59(5): 3293-3299.

DOI：10.3938/jkps.59.3293

• Quantum clots
• Cd:S ratio
• 1-octadecene
• Growth time

Quantum dots (QDs) have been attracting researchers' attention because of their potentials for use as nanotechnology key components. In this work, we report a systematic study of the synthesis process for making compound semiconductor QDs in 1-octadecene (ODE). The synthetic QDs were characterized by using the photoluminescence and absorption spectra, and TEM and XRD analysis. The average size of the nanocrystals was 3.7 - 4.5 rim from their absorption spectra and TEM images. ODE facilitates nucleation by providing an available source of sulfite, and an excess of oleic acid may lead to cationic monomer excess. The samples show excitonic luminescence mid brightness in the range 420 - 460 nm. These results indicate that we can control the diameter of CdS QDs synthesized in 1-octadecene (ODE). The synthesized semiconductor QDs can be used as fluorescence markers.

• 出版日期2011-11