Aqueous phase synthesis and fluorescence properties of inverted core/shell ZnSe/CdSe nanocrystals |
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| Authors: | Jing Zhou Luwen Jiang Wen Guo Hai Jiang Zhonghua Hao |
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| Institution: | (1) State Key Laboratory on Integrated Optoelectronics, and College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China;(2) Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, Worcester, MA 01609, USA;(3) State Key Laboratory of Superhard Materials, Jilin University, Changchun, 130012, China; |
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| Abstract: | We report a facile aqueous phase synthesis for preparing water-soluble inverted core/shell ZnSe/CdSe semiconductor nanocrystals.
The samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and their optical properties
were investigated by using UV-vis-NIR spectrophotometer and fluorescence spectrophotometer. The results indicate that the
synthesized ZnSe/CdSe nanocrystals are inverted core/shell structure with diameter of about 5 nm. Furthermore, their absorption
band-edge is red-shifted with the growth of CdSe shell; correspondingly, their emission wavelength can be tuned from 460 nm
to 604 nm. |
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| Keywords: | aqueous phase synthesis nanocrystal ZnSe/CdSe semiconductor |
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