Vibrational Order, Structural Properties, and Optical Gap of ZnO Nanostructures Sintered through Thermal Decomposition

被引：6
作者：
Londono-Calderon, Alejandra [1 ]
Jurado-Lasso, Fernando F. [1 ]
Romero-Salazar, Juan D. [1 ]
Jurado-Lasso, Nathaly [1 ]
Fabian Jurado, J. [1 ]
机构：
[1] Univ Nacl Colombia, Dept Quim & Fis, Lab Propiedades Term Dielect Compositos, Manizales, Colombia
来源：
JOURNAL OF NANOMATERIALS | 2014年 / 2014卷
关键词：
ZINC ACETATE; NANORODS; NANOWIRES; SUBSTRATE; NANOPARTICLES; TEMPERATURE; GROWTH;
D O I：
10.1155/2014/340384
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The sintering of different ZnO nanostructures by the thermal decomposition of zinc acetate is reported. Morphological changes from nanorods to nanoparticles are exhibited with the increase of the decomposition temperature from 300 to 500 degrees C. The material showed a loss in the crystalline order with the increase in the temperature, which is correlated to the loss of oxygen due to the low heating rate used. Nanoparticles have a greater vibrational freedom than nanorods which is demonstrated in the rise of the main Raman mode E-2 (high) during the transformation. The energy band gap of the nanostructured material is lower than the ZnO bulk material and decreases with the rise in the temperature.
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页数：6
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