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Citation: SUN Minga, YANG Xiu-Rong. Magic Sized CdSe Nanoclusters:Sequential Growth and Room Temperature Optical Properties[J]. Chinese Journal of Applied Chemistry, ;2010, 27(4): 449-453. doi: 10.3724/SP.J.1095.2010.90324 shu

Magic Sized CdSe Nanoclusters:Sequential Growth and Room Temperature Optical Properties

SUN Minga ^a,b, ,
YANG Xiu-Rong ^a

a. State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022;
b. Graduate School of the Chinese Academy of Sciences, Beijing

Received Date: 4 May 2009
Revised Date: 12 June 2009

Sequential growth of magic sized semiconductor nanoclusters(CdSe) was realized in noncoordination solvent 1-octadecene(ODE) with 1-dodecanethiol(DDT) as "nucleating agent",dodecylamine(DDA) as "activating agent",cadmium fatty acid salts and ODE-Se as precursors.The obtained CdSe nanoclusters were characterized by transmission electron microscopy(TEM),ultraviolet-visible absorption(UV-Vis abs) spectroscopy,photoluminescence excitation(PLE),photoluminescence(PL) spectroscopy and time-resolved fluorescence spectroscopy.CdSe nanoclusters possess excellent room temperature photoluminescence properties.The PL spectra,which can only be obtained at low temperature(5~200 K) previously,can be easily measured at room temperature.Most of the emission spectra were induced by the surface traps and located in the yellow color region.Parts of nanoclusters can exhibit white color emission,whose CIE coordinate is x=0.339 and y=0.340.They will provide alternative materials for white color devices.
- semiconductor,
- magic sized nanocluster,
- room temperature fluorescence,
- white color
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