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23 January 2006 Preparation, characterization, and optical properties of carbon doped ZnO nanocrystal
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Proceedings Volume 6029, ICO20: Materials and Nanostructures; 60290R (2006) https://doi.org/10.1117/12.667707
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China
Abstract
In this paper, we prepared carbon doped nanocrystalline ZnO by pyrolyzed zinc stearate at 250°C and 300°C respectively. The XRD curves indicate the sample has polycrystalline hexagonal wurtzite structure. The XRD data of the sample prepared at 250°C and 300°C has a bigger angle shift about 0.05°and 0.3°respectively. That indicate the structure of the sample has some changes. The EDS indicate the sample contains Zn, O and C. So the XRD shift may attribute to the C. The XPS indicate the C doped in the crystal lattice of ZnO of the sample prepared at 300°C, and the sample prepared at 250°C may be only a few of C doped in the crystal lattice of ZnO. The PL of the sample prepared at 300°C only has a weak ultraviolet emission, which indicates C modified the nanocrystalline ZnO surface as a non-radiative recombination center. In this process C could non-radiatively recombine the carries on the nanocrystallin ZnO surface. The sample prepared at 250°C has a strong visible emission at about 530 nm. This emission band could be attributed to oxygen vacancy because C schlepped some oxygen on the nanocrystalline ZnO surface.
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Zhijun Wang, Shouchun Li, Youming Lu, Dongxu Zhao, Jiayi Liu, Lianyuan Wang, Jinbao Zhang, Yanwei Gao, and Zeheng Wang "Preparation, characterization, and optical properties of carbon doped ZnO nanocrystal", Proc. SPIE 6029, ICO20: Materials and Nanostructures, 60290R (23 January 2006); https://doi.org/10.1117/12.667707
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