The light absorption properties of Cu2S nanowire arrays

摘要：

　　Cu2S nanowire arrays with different morphologies were prepared by solid-gas reaction between Cu foil and mixture gas of H2S and O2.Their microstmctures were observed with XRD,TEM,and the optical properties were measured by DRS,PL and Raman.The results showed that the nanowire were Cu2S single crystal with a thin layer CuxO (x=l,2) over the surface.The optical properties of the Cu2S nanowire arrays are related to the diameter,length,and distribution density of nanowire arrays.The thinner is the nanowires diameter; the bigger is the absorption of the visible light,and the absorbance begun to descend within infrared band.The absorbance of nanowire arrays with bigger diameter to the infrared light was stronger than that with thinner diameter.The photoluminescence spectrum (PL) indicated that band gaps of Cu2S nanowire arrays also changed simultaneously with the nanowire arrays structure parameters.The research demonstrated the Cu2S nanowire arrays potential applications in the photovoltaic cell and solar-heat harvesting area.

关键词： Nanowire arrays Light absorption Cu2S Solid-gas reaction

作者: Shan Ren Liqiang Li Zhufeng Liu Ming Li Lan Hong

作者单位: State Key Laboratory of Optoelectronic Materials and Technologies, The Key Laboratory of Low-carbon Chemistry & Energy Conservation of Guangdong Province, The Center for Nanotechnology Research, School of Physics and Engineering, Sun Yat-sen(Zhongshan)University, Guangzhou 510275, Peoples Republic of China

会议类型: 国际会议

会议名称: the 2012 International Conference on Frontiers of Nanoscience and Technology(2012年纳米科学与技术国际会议(ICFNST 2012))

会议地点: 香港

会议语种:英文

页码: 272-276

在线出版日期: 2012-07-26（万方平台首次上网日期，不代表论文的发表时间）