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Fabrication and optical properties of 2D ordered arrays of CdS nanocrystals by nanosphere lithography

Sun Ping Xu Ling Zhao Wei-Ming Li Wei Xu Jun Ma Zhong-Yuan Huang Xin-Fan Chen Kun-Ji Wu Liang-Cai

Fabrication and optical properties of 2D ordered arrays of CdS nanocrystals by nanosphere lithography

Sun Ping, Xu Ling, Zhao Wei-Ming, Li Wei, Xu Jun, Ma Zhong-Yuan, Huang Xin-Fan, Chen Kun-Ji, Wu Liang-Cai
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  • Received Date:  02 July 2007
  • Accepted Date:  02 August 2007
  • Published Online:  20 March 2008

Fabrication and optical properties of 2D ordered arrays of CdS nanocrystals by nanosphere lithography

  • 1. (1)南京大学物理系,固体微结构国家重点实验室,南京 210093; (2)上海微系统和技术信息研究所,上海 200050

Abstract: We realized the fabrication of 2D ordered arrays of CdS nanocrystals by nanosphere lithography by use of a monolayer of self-assembled polystyrene spheres 220nm in diameter as a mask. We used scanning electron microscope (SEM) to characterize the structure of samples. The results indicate that the 2D arrays of CdS nanocrystals produced by nanosphere lithography have highly ordered structure which has the same period of the original PS mask. According to the transmission spectrum,it is estimated that the forbidden band width of the CdS nanocrystals is around 2.60eV,which shows a size-dependence of the CdS nanocrystals. This structure has the promising application in the light filter and single-photon emitter.

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