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Controlled Growth of Zinc Oxide Nano Structures by Electrochemical Synthesis and Their Photoluminescence Properties
Author(s): 
Pages: 602-606
Year: Issue:  6
Journal: Journal of Inorganic Materials

Keyword:  氧化锌 纳米结构 电化学法 光致发光;
Abstract: 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.
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