Determination of quantum dot size by Fourier transform visible spectroscopy

作者：Armaselu A^*

来源：Optoelectronics and Advanced Materials-Rapid Communications, 2015, 9(3-4): 531-536.

• Fourier transform visible spectroscopy
• Core-shell quantum dot
• Size
• Fluorescence average wavelength

Characterization of QD size is important in the process of preparation and their applications. Therefore, it is necessary to be found some quick, efficient, and trusted techniques for determination of the nanoparticle size. This paper proposes a possible investigation method of the size of commercial core-shell CdSe/ZnS quantum dots (QDs) using Fourier transform visible spectroscopy (FTVS). We found some relationships between the given QD sizes and their corresponding fluorescence (average) wavelengths, calculated from each emission peak of the Fourier transform spectra. These results show that FTVS is a novel, simple, fast, and reliable technique to estimate the CdSe/ZnS QD size. This methodology can be easily extrapolated to the size determination of other fluorescent nanoparticles.

• 出版日期2015-4