以PVP纳米纤维为模板采用原子层沉积法制备MgxZn1－xO纳米纤维及其光学性质研究
이PVP납미섬유위모판채용원자층침적법제비MgxZn1－xO납미섬유급기광학성질연구
Preparation of Mg xZn1-xO Nanofibers Using PVP Nanofibers as Templates by Atom Layer Deposition and Their Optical Properties
  • 万方数据
    光谱学与光谱分析 광보학여광보분석
    SPECTROSCOPY AND SPECTRAL ANALYSIS
    2014年 12期 3197-3200 ,共4页

    贾慧民%唐吉龙%方铉%王双鹏%赵海峰%房丹%王晓华%方芳%李金华%楚学影%魏志鹏%马晓辉%徐莉

    가혜민%당길룡%방현%왕쌍붕%조해봉%방단%왕효화%방방%리금화%초학영%위지붕%마효휘%서리

    Mg掺杂ZnO%PVP%纳米纤维%静电纺丝%ALD Mg摻雜ZnO%PVP%納米纖維%靜電紡絲%ALD
    Mg참잡ZnO%PVP%납미섬유%정전방사%ALD
    MgxZn1 - xO%PVP%Composite nanofibers%Electrospinning%ALD
    采用静电纺丝方法制备聚乙烯吡咯烷酮（PVP）纳米纤维，并以其为模板采用原子层沉积（ALD）方法制备不同Mg掺杂浓度的MgxZn1－xO纳米纤维。研究了不同Mg掺杂浓度对复合纳米纤维结构和光学性质的影响。利用场发射扫描电子显微镜（FESEM）、光致发光（PL）和紫外-可见光（UV-Vis）吸收谱对样品测试并进行表征分析。结果表明，Mg元素的掺入并没有改变ZnO纳米纤维的形貌，所有样品的表面形貌极其相似，只是掺杂后纤维直径有所增大；随着Mg掺杂浓度的增加吸收边逐渐发生蓝移，表明所制备MgxZn1－xO纤维的带隙具有可调节性。与此同时，在PL谱中可以观察到样品的紫外（UV）发光峰从377nm移动至362nm，且与不掺杂的样品相比，MgxZn1－xO纳米纤维的UV发光强度明显增强。通过这种方法可以合成组分可控的MgxZn1－xO纳米纤维。在ZnO中掺入Mg元素可以有效地提高ZnO-PVP纳米纤维的禁带宽度以及UV发射强度。
    채용정전방사방법제비취을희필각완동（PVP）납미섬유，병이기위모판채용원자층침적（ALD）방법제비불동Mg참잡농도적MgxZn1－xO납미섬유。연구료불동Mg참잡농도대복합납미섬유결구화광학성질적영향。이용장발사소묘전자현미경（FESEM）、광치발광（PL）화자외-가견광（UV-Vis）흡수보대양품측시병진행표정분석。결과표명，Mg원소적참입병몰유개변ZnO납미섬유적형모，소유양품적표면형모겁기상사，지시참잡후섬유직경유소증대；수착Mg참잡농도적증가흡수변축점발생람이，표명소제비MgxZn1－xO섬유적대극구유가조절성。여차동시，재PL보중가이관찰도양품적자외（UV）발광봉종377nm이동지362nm，차여불참잡적양품상비，MgxZn1－xO납미섬유적UV발광강도명현증강。통과저충방법가이합성조분가공적MgxZn1－xO납미섬유。재ZnO중참입Mg원소가이유효지제고ZnO-PVP납미섬유적금대관도이급UV발사강도。
    In the present paper ,MgxZn1 - xO nanofibers with different doping concentration were prepared by atom layer deposi-tion (ALD) using polyvinyl pyrrolidone (PVP) nanofibers as template ,which were synthesized by electrospinning .The influ-ence of different Mg doping concentration on the structure and optical properties of composite nanofibers was investigated .The samples were characterized by field emission scanning electron microscopy (FESEM ) ,ultraviolet visible (UV-Vis)absorption spectroscopy and photoluminescence (PL) spectra .The doping of Mg did not change the morphologies of ZnO nanofibers ,the morphologies of all the samples were very similar while the diameter of Mg xZn1 - xO-PVP composite nanofibers became larger af-ter doping .With the increase in the Mg doping concentration ,the absorption edge shifted to larger energy side ,revealing the band gap tenability of MgxZn1 - xO nanofibers .Meanwhile ,a significant blue shift of the UV emission peak from 377 to 362 nm was observed in PL spectra .Compared with ZnO-PVP composite nanofibers ,the UV emission intensity of MgxZn1 - x O-PVP composite nanofibers was much stronger .Component control MgxZn1 - xO nanofibers can be synthesized by this method .The do-ping of Mg elements in ZnO can effectively improve the band gap of ZnO-PVP nanofibers and the intensity of UV emission .
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