期刊
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
卷 11, 期 11, 页码 9865-9870出版社
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2011.5221
关键词
Zn1-xCdxO Alloys; Zn1-xCdxO/ZnO Core/Shell Nanoparticles; Band Gap Shrinking; Lattice Expansion; Photoluminescence Enhancement
类别
资金
- NSFC [10974917, 10574011]
- Fundamental Research Funds for the Central Universities
Octylamine capped Zn1-xCdxO alloys and Zn1-xCdxO/ZnO core/shell nanoparticles have been grown by the thermal decomposing of zinc and cadmium cupferronates in organic solvents. Zn1-xCdxO alloys incorprated with different concentration of Cd have been grown by quickly injecting of their precursors at 200 degrees C. Zn1-xCdxO/ZnO core/shell nanoparticles are performed by slowly injecting of shell precursors at 180 degrees C. The prepared nanoparticles are characterized by X-ray diffraction, absorption spectrometer, Mirco-Raman spectrometer and transmission electron microscopy. The band gap of ZnCdO alloys shrinks linearly and the crystal lattice expands with an increase of Cd concentration. The growth of ZnO shells on ZnCdO cores enhances the core luminescence dramatically and results in a red shift in the absorption and emission of Zn1-xCdxO cores.
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