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首页> 外文期刊>Physica, B. Condensed Matter >Growth and optical properties of ZnO microwells by chemical vapor deposition method
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Growth and optical properties of ZnO microwells by chemical vapor deposition method

机译：化学气相沉积法生长ZnO微孔及其光学性质

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摘要

The well-like ZnO nanostructures were obtained by chemical vapor deposition method. The uniform and dense ZnO slim nano-columns were grown along the circle to form a microwell. The growth mechanisms, such as 1D linear, 2D screw dislocation and step growth are discussed. These observations provide some insight into the growth kinetics in vapor-solid growth process. The fabrication of ZnO microwell morphology provided a direct experimental evidence for explaining the 1D growth mechanism based on the axial screw dislocation. Photoluminescence (PL) microscopy showed the surface-related optical properties. The green light emission enhancement revealed that the ZnO microwells have waveguide properties. The abnormal enhancement of integrated PL intensity of deep-level emission with temperature increase showed abundant surface state existence.
机译：通过化学气相沉积法获得了井眼状的ZnO纳米结构。均匀且致密的ZnO细长纳米柱沿着圆形生长，形成微孔。讨论了生长机理，例如一维线性，二维螺钉错位和台阶生长。这些观察结果提供了一些有关汽固生长过程中生长动力学的见解。 ZnO微孔形态的制备为解释基于轴向螺钉位错的一维生长机理提供了直接的实验证据。光致发光（PL）显微镜显示了表面相关的光学特性。绿光发射增强表明ZnO微孔具有波导特性。随着温度的升高，深层发射的总PL强度异常增强，表明存在丰富的表面状态。

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