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首页> 外文期刊>Crystal growth & design >Arm-Length-Controlled Synthesis, Field Emission, and Luminescence of CdS Multipods
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Arm-Length-Controlled Synthesis, Field Emission, and Luminescence of CdS Multipods

机译：臂长控制的CdS多脚架的合成，场发射和发光

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摘要

At a low temperature of 550 degrees C, multiarmed US nanostructures were successfully prepared by thermal evaporation of US powders without use of any catalysts. The length and tip diameter of the arms in US multipods could be controlled by simply varying the growth time. With the arm length increasing, the tip diameter successively decreases. Short-armed multipods (SMPs) are made of both zinc blende and wurtzite phase US, while medium-armed multipods (MMPs) and long-armed multipods (LMPs) consist of only hexagonal phase CdS. LMPs exhibit good field-emission (FE) properties with relatively high field-enhancement factor and enhanced luminescence compared to SMPs and MMPs because of the needle-shaped arms and high crystallinity. Besides bind energy emission of US, LMPs exhibit it broad red emission in CL spectrum because of the arms with high aspect ratios.
机译：在550摄氏度的低温下，无需使用任何催化剂即可通过热蒸发US粉而成功制备了多臂US纳米结构。通过简单地改变生长时间，可以控制美国多足动物的臂长和尖端直径。随着臂长的增加，尖端直径逐渐减小。短臂多脚架（SMP）由锌混和相US纤锌矿制成，而中臂多脚架（MMP）和长臂多脚架（LMP）仅由六方相CdS组成。与SMP和MMP相比，LMP具有良好的场发射（FE）特性，具有相对较高的场增强因子和增强的发光性，这是因为其针状臂和高结晶度。除了具有美国的束缚能发射之外，由于具有高纵横比的臂，LMP在CL光谱中表现出宽泛的红色发射。

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