氧化锌纳米结构的电化学控制制备及其光致发光性能  

Controlled Growth of Zinc Oxide Nano Structures by Electrochemical Synthesis and Their Photoluminescence Properties

作　　者：张雯[1] 贺永宁[2] 周成波[2] 崔吾元[2] 

机构地区：[1]西安交通大学理学院,西安710049 [2]西安交通大学电信学院,西安710049

出　　处：《无机材料学报》2011年第6期602-606,共5页Journal of Inorganic Materials

基　　金：国家自然科学基金(60876038);西安交通大学校内基金(08140011)~~

摘　　要：利用电化学沉积法,通过调节电解液浓度、时间、温度等因素,在氧化铟锡(ITO)导电玻璃上制备了形貌不同的氧化锌(ZnO)纳米薄膜.通过X射线衍射、扫描电镜、透射电镜、光致发光谱等测试手段对不同形貌的ZnO纳米薄膜进行了表征和研究.研究表明,在高于阈值电压的情况下氧化锌薄膜迅速生成,微观形貌主要受电解质溶液的浓度影响,随着电解质浓度的升高可分别获得胞芽状、棒状、片层状结构,结合晶体生长理论探讨了不同形貌ZnO薄膜的成因.室温光致发光谱显示片状的ZnO纳米薄膜在近带边有较强的宽化激发峰,而可见区的发光峰受到明显抑制,这一结构有望应用于光电器件、传感器等领域.Different types of zinc oxide（ZnO） nanostructures were prepared by electrochemical synthesis on an indium tin oxide（ITO） glass substrate by adjusting the concentration of the electrolyte,deposition time and tem-perature.X-ray diffraction（XRD）,scanning electron microscope（SEM）,high resolution transmission electron mi-croscope（HRTEM） and photoluminescence（PL） spectrum were to determine the characteristics of these ZnO nano structures.The results show that ZnO films is formed quickly at the voltage over a threshold.The ZnO films mor-phologies are determined by the concentration of the electrolyte.Nanobuds,nanorods,flakes can be obtained in turn with the concentration of Zn（NO3）2.6H2O increasing.Such different morphology formation mechanisms are dis-cussed on the basis of crystal growth theory.The PL spectra of the samples show that the flake ZnO films have a significant widen near edge emission peak with the depressed visible emission,which may have potential applica-tions on optoelectronic devices and sensors.

关 键 词：氧化锌 纳米结构 电化学法 光致发光 

分 类 号：TQ132[化学工程—无机化工]