材料导报
材料導報
재료도보
MATERIALS REVIEW
2009年
14期
57-60,67
,共5页
热蒸发%ZnO纳米管%ZnO纳米棒%光致发光
熱蒸髮%ZnO納米管%ZnO納米棒%光緻髮光
열증발%ZnO납미관%ZnO납미봉%광치발광
thermal evaporation%ZnO nanotubes%ZnO nanorods%photolurninescence
通过简单的两步热蒸发方法成功地实现了ZnO纳米管和纳米棒的集成.SEM结果表明,大量的纳米线以层层生长的机理从约200℃低温Si基片表面生长出来.EDS和XRD结果进一步表明第一步所制备的样品主要是由大量Zn和少量Zn的氧化物组成.第二步所制备样品的SEM和TME图像证实了在高温下以第一步所制备的样品作为第二步的基片,可实现纳米管和纳米棒的集成.TEM图像表明,纳米管的表面所生长的纳米棒是单晶的.通过改变工作气压,可调控纳米管表面纳米棒的尺寸和形貌,实现ZnO纳米结构可控生长.室温光致发光谱表明,样品的光学性质可通过可控的形貌来调制.
通過簡單的兩步熱蒸髮方法成功地實現瞭ZnO納米管和納米棒的集成.SEM結果錶明,大量的納米線以層層生長的機理從約200℃低溫Si基片錶麵生長齣來.EDS和XRD結果進一步錶明第一步所製備的樣品主要是由大量Zn和少量Zn的氧化物組成.第二步所製備樣品的SEM和TME圖像證實瞭在高溫下以第一步所製備的樣品作為第二步的基片,可實現納米管和納米棒的集成.TEM圖像錶明,納米管的錶麵所生長的納米棒是單晶的.通過改變工作氣壓,可調控納米管錶麵納米棒的呎吋和形貌,實現ZnO納米結構可控生長.室溫光緻髮光譜錶明,樣品的光學性質可通過可控的形貌來調製.
통과간단적량보열증발방법성공지실현료ZnO납미관화납미봉적집성.SEM결과표명,대량적납미선이층층생장적궤리종약200℃저온Si기편표면생장출래.EDS화XRD결과진일보표명제일보소제비적양품주요시유대량Zn화소량Zn적양화물조성.제이보소제비양품적SEM화TME도상증실료재고온하이제일보소제비적양품작위제이보적기편,가실현납미관화납미봉적집성.TEM도상표명,납미관적표면소생장적납미봉시단정적.통과개변공작기압,가조공납미관표면납미봉적척촌화형모,실현ZnO납미결구가공생장.실온광치발광보표명,양품적광학성질가통과가공적형모래조제.
Integration of ZnO nanotubes and nanorods is realized through simple two-step thermal evaporation deposition process. SEM image indicates that a number of nanowires grow from ～200℃ Si substrate via layer-by-layer growth model. EDS and XRD results display that one-step-prepared samples consist of plentiful Zn and little oxide. SEM and TEM images of samples prepared at step two testify that at high temperature, integration of ZnO nanotubes and nanorods is realized using the one-step-prepared samples as substrate. TEM results indicate that the nanorods on the surface of nanotubes are single crystal. The variety of work pressures may control the size and morphology of nanorods located on the surface of nanotubes, resulting in the formation of ZnO nanostructures with controllable morphologies. The morn-temperature photoluminescence spectra show that the optical properties of samples can be modulated by controllable morphology.
