Mg掺杂对ZnO纳米纤维发光性能的影响  

Effects of Mg-doping on the Photoluminescence Properties of ZnO Nanofiber Films

作　　者：朱彦君[1] 张海明[1] 宋朱晓[1] 高波[1] 胡国锋[1] 李育洁[1] 

机构地区：[1]天津工业大学理学院,天津300160

出　　处：《材料科学与工程学报》2011年第2期233-236,共4页Journal of Materials Science and Engineering

基　　金：天津市自然科学基金资助项目(09JCYBJC04400)

摘　　要：采用静电纺丝法在Si基底上制备了不同Mg掺杂浓度的ZnO纳米纤维膜,利用扫描电子显微镜（SEM）、X射线衍射（XRD）、X射线光电子能谱（XPS）、光致发光（PL）等手段对不同Mg掺杂浓度ZnO纳米纤维膜的表面形貌、晶体结构、化学成分、发光性能进行研究。SEM结果表明MgxZn1-xO纳米纤维的直径在50~300nm。XRD结果表明在Mg掺杂浓度低于15%（x=0.15）时,晶体呈现ZnO六角纤锌矿结构,当掺杂浓度达到20%（x=0.2）时,晶体出现MgO的分相。XPS结果表明Mg已成功掺入到ZnO纳米纤维中。PL谱表明MgxZn1-xO纤维膜具有较强的紫外发射,而可见发射几乎观察不到,随着Mg掺杂浓度的增加,紫外发光峰明显蓝移且发光强度增加。Mg_xZn_1-xO nanofiber films were synthesized by electrospinning with different doping concentrations of Mg.The samples were characterized by scanning electron microscopy（SEM）,X-ray diffractometry（XRD）,X-ray photoelectron spectroscopy（XPS）,photoluminescence（PL）.The SEM results show that the diameter of Mg_xZn_1-xO nanofiber is about 50-300nm.The XRD results indicate that when Mg doping concentration is below 15%,only ZnO with a hexagonal wurtzite structure is observed,when the doping concentration of Mg is up to 20%（x = 0.2） the sub-phase of MgO appears.The XPS results show that Mg is doped in ZnO nanofibers successfully.The PL results indicate that Mg_xZn_1-xO nanofiber films have strong UV emitting,as for the visible emission is nearly absent.With the increase of Mg doping concentration,the UV emission peak appears blue-shifted obviously and the luminescence intensity of the films is increased.

关 键 词：MGXZN1-XO 纳米纤维膜 静电纺丝 发光 

分 类 号：TN304.05[电子电信—物理电子学]