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Manipulation of the Morphology of CdSe Nanostructures: The Effect of Si

机译:CdSe纳米结构形态的操纵:Si的影响

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摘要

The morphological manipulation, structural characterization, and photoluminescence properties of different CdSe nanocrystals are reported. Several different CdSe structures, including nanowires, nanorods, nanoparticles, and tetrapod crystals, have been grown on silicon substrates by means of simple, Si-assisted chemical vapor deposition. By manipulating the growth driving force (i.e., the degree of supersaturation), the morphology of the CdSe nanocrystals can be varied sequentially from nanowiresano-rods to nanoparticles to tetrapod structures. The optical properties of the CdSe nanocrystals are investigated using photoluminescence spectroscopy. Some thermodynamic models are proposed to explain the results.
机译:报道了不同的​​CdSe纳米晶体的形态学操纵,结构表征和光致发光性质。几种不同的CdSe结构,包括纳米线,纳米棒,纳米颗粒和四脚架晶体,已经通过简单的硅辅助化学气相沉积法在硅衬底上生长。通过控制生长驱动力(即过饱和度),CdSe纳米晶体的形貌可以从纳米线/纳米棒到纳米颗粒再到四脚架结构依次变化。使用光致发光光谱法研究了CdSe纳米晶体的光学性质。提出了一些热力学模型来解释结果。

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