论文信息 - Synthesis and Characterization of CdSe Nanocrystal Quantum Dots by Solution-Liquid-Solid Method

Synthesis and Characterization of CdSe Nanocrystal Quantum Dots by Solution-Liquid-Solid Method

The present work describes a solution-liquid-solid (SLS) synthesis route for the preparation of CdSe nanocrystal quantum dots using the low-melting-point Bi nanoparticles as catalysts. UV-vis absorption spectra were used to determine the growth of CdSe cluster. The shape and size distribution of the CdSe QDs were determined by analysis of Transmission electron microcopy (TEM) images. A peak wavelength of 399nm in the absorption spectra on day 5 indicated that the CdSe cluster formed. TEM micrographs showed that CdSe QDs had a relatively narrow distribution of QD size, and the diameter of CdSe QDs was about 4 nm. Our preliminary results illustrated that smaller size of CdSe QDs could be prepared by SLS method and it was small enough for bioimaging applications.

Y. Shan | Y. Chuan | Yuyue Qin | Haiyun Chen | M. Yuan

[1] J. Jeon,et al. Size tunability and optical properties of CdSe quantum dots for various growth conditions , 2013 .

[2] Marius S. Secula,et al. Highly luminescent polystyrene embedded CdSe quantum dots obtained through a modified colloidal synthesis route , 2012, Electronic Materials Letters.

[3] Wen-Hau Zhang,et al. Colloidal synthesis and characterization of CdSe/CdTe core/shell nanowire heterostructures , 2011 .

[4] Ho-soon Yang,et al. Radiative decay of surface-trapped carriers and quantum yield in CdSe nanocrystal quantum dots , 2011 .

[5] M. Shamsipur,et al. Synthesis, characterization and size dependent energy band gap of binary CdSe quantum dot and its nanoparticle film , 2011 .

[6] Xiaogang Peng. An essay on synthetic chemistry of colloidal nanocrystals , 2009 .

[7] A. Tribu,et al. Bright CdSe quantum dot inserted in single ZnSe nanowires , 2009, Microelectron. J..

[8] B. Hong,et al. Journal of the Korean Physical Society: Preface , 2003 .