基于氧化铜与富勒烯衍生物构筑的纳米异质结二极管及其光电性能研究  

Inorganic-organic Hybrid Heterojunction Based on p-CuO Nanocone Array/n-PCBM and Optoelectronic Properties

作　　者：肖铭星 章铸 蒋岚 马荣荣 姜圆圆 邢洁 刘俊宏 吴璠[2] XIAO Mingxing;ZHANG Zhu;JIANG Lan;MA Rongrong;JIANG Yuanyuan;XING Jie;LIU Junhong;WU Fan(Huzhou University Qiuzhen College, Huzhou 313000, China;School of Science, Huzhou University, Huzhou 313000, China)

机构地区：[1]湖州师范学院求真学院,浙江湖州313000 [2]湖州师范学院理学院,浙江湖州313000

出　　处：《湖州师范学院学报》2020年第2期23-27,共5页Journal of Huzhou University

基　　金：湖州师范学院“大学生创新创业训练计划”重点项目(201911);国家自然科学基金项目(11547312);浙江省自然科学基金项目(Y20F040001);湖州市自然科学基金项目(2019YZ02);湖州师范学院专业建设经费资助项目.

摘　　要：利用溶液法在FTO衬底上制备CuO纳米锥阵列(NCR)/[6,6]-苯基-C61-丁酸甲酯(PC61BM)的无机-有机杂化本体异质结.首先通过水热法制备CuO-NCR,然后将PC61BM溶液旋涂在CuO-NCR表面获得杂化本体异质结.X射线衍射谱表明,CuO纳米锥为单斜晶相.扫描电子显微镜图像显示,CuO纳米锥阵列相对致密且均匀.透射电子显微镜表明,该阵列由许多锥形纳米锥构成,顶部较薄而底部较厚.吸收光谱表明,CuO纳米锥阵列的光学带隙为1.47 eV.高分辨率扫描电镜表明,CuO-NCR/PC61BM本体异质结形成良好,其中PC61BM可以紧密填充CuO纳米锥之间的间隙.CuO-NCR/PC61BM本体异质结器件的电学特性表明,所制备的CuO-NCR/PC61BM本体异质结的整流性能优于CuO膜/PC61BM平面异质结的整流性能.此外,CuO-NCR/PC61BM本体异质结具有光电二极管特性,在2 V偏压下,白光照明(28.8 mW/cm2)下的光电流是暗电流的3倍以上.Inorganic-organic hybrid bulk heterojunction(BHJ)of CuO nanocone array(NCR)/Methyl[6,6]-phenyl-C61-butyrate(PC61BM)has been fabricated on FTO substrate using solution-processed method.Firstly,the CuO-NCR is prepared on the FTO substrate by the hydrothermal methodand secondly,the hybrid BHJ is deposited on top of the CuO-NCR surface by spin-coating the PC61BM solution.X-Ray Diffraction(XRD)spectrum shows that CuO nanocone is a monoclinic phase.The scanning electron microscope(SEM)image revealed that the CuO nanocone array is relatively dense and uniform.Transmission electron microscope(TEM)clearly shows that the array is constituted by many taper shaped nanocones,in which,the top portion is thin and the bottom is thick.Absorption spectra show that the optical band gap of CuO nanocone array is 1.47 eV.The high-resolution SEM shows that the PC61BM can compactly fill the inter-spaces between CuO nanocone.The electrical characterization of CuO-NCR/PC61BM BHJ device indicates that the CuO-NCR/PC61BM BHJ has better rectifying behavior than that of planar CuO film/PC61BM heterojunction counterpart.Moreover,the CuO-NCR/PC61BM BHJ performs as photo-diode characteristics by showing a photo-generated current at a biasing voltage of 2 V under white light illumination(28.8 mW/cm2)which is more than 3-fold the dark current.

关 键 词：氧化铜 纳米阵列 纳米异质结 光电二极管 

分 类 号：O469[理学—凝聚态物理]