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ZnO纳米线/纳米棒混合阵列的制备及其光致发光性能研究
  • ISSN号：1000-985X
  • 期刊名称：人工晶体学报
  • 时间：2011
  • 页码：567-571
  • 分类：TP104[自动化与计算机技术—控制科学与工程;自动化与计算机技术—控制理论与控制工程]
  • 作者机构：[1]清华大学材料科学与工程系,先进材料教育部重点实验室,北京电子显微镜中心,北京100084
  • 相关基金：973计划前期研究专项（2009CB929202）; 国家自然科学基金委-广东联合基金重点项目（U0734001）; 国家自然科学基金（11074141）资助项目
  • 相关项目：过渡金属掺杂的C/Si薄膜结构中的正负磁阻及正负磁阻转换
作者： 栗粟|章晓中|
关键词： ZNO纳米线, 纳米棒, 热蒸发法, 光致发光, ZnO nanowire, nanorod, thermal evaporation method, photoluminescence
中文摘要：

使用无催化剂热蒸发法,在ZnO/Si薄膜衬底上制备了ZnO纳米线/纳米棒混合阵列。其中,纳米线的直径为10~20 nm,纳米棒的直径为60~160 nm,二者混合在一起垂直生长于衬底表面。从衬底的上游到下游位置,混合阵列中纳米线的含量逐渐下降,纳米棒逐渐增多。室温光致发光测试发现尺寸较小的纳米线阵列的紫外光发光强度比大尺寸纳米棒阵列高约5倍。持续激发光照射下,纳米线阵列的发光强度逐渐上升,停止光照后又逐渐下降到初始值,这可以用纳米线表面O2分子的解吸附和吸附过程来理解。

英文摘要：

Well-aligned ZnO nanowire/nanorod mixed arrays were synthesized on ZnO/Si thin film substrates by a catalyst-free thermal evaporation method.The nanowires and nanorods with diameters of 10-20 nm and 60-160 nm,respectively,were mixed together in the arrays.The ratio between the numbers of nanowires and nanorods was decreasing in the downstream direction on the substrate.Room-temperature photoluminescence measurements showed that the ultraviolet emission intensity of the nanowire arrays was about 5 times higher than that of the nanorod arrays.Continuous illumination with incident laser serves to enhance the ultraviolet emission of the nanowire arrays,and the emission intensity decreased to the original value without the illumination,which could be interpreted by the desorption and adsorption of the oxygen species on the nanowire surface.

同期刊论文项目
多功能碳基半导体纳米薄膜的制备、结构和性能表征
期刊论文 48 会议论文 35 获奖 2
过渡金属掺杂的C/Si薄膜结构中的正负磁阻及正负磁阻转换
期刊论文 38 会议论文 28
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期刊信息
  • 《人工晶体学报》
  • 中国科技核心期刊
  • 主管单位:中国建材工业协会
  • 主办单位:中国硅酸盐学会 晶体生长与材料专业委员会 中材人工晶体研究院
  • 主编：余明清
  • 地址：北京市733信箱
  • 邮编：100018
  • 邮箱：
  • 电话：010-65492963 65492968 65493320
  • 国际标准刊号：ISSN：1000-985X
  • 国内统一刊号：ISSN：11-2637/O7
  • 邮发代号:
  • 获奖情况:
  • 1997年获国家科技优秀期刊,获部级优秀科技期刊奖,中国期刊方阵“双效”期刊
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  • 被引量:9943