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Aligned arrays of Te nanorods grown from the faceted surfaces of colloidal GeTe particles

机译：从胶态GeTe颗粒的多面表面生长的Te纳米棒的排列阵列

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Reactions carried out with diphenylgermane (DPG) and trioctylphosphine-tellurium (TOP-Te) in supercritical hexane at 460 degrees C at 13.6 MPa yielded faceted GeTe particles. When octanol was added to the reactions, the GeTe particles formed with arrays of aligned Te nanorods extending off their surfaces. These GeTe/Te heterostructures also formed when other additives such as oleic acid and isoprene were present in the reactions, but the addition of thiols quenched Te nanorod growth. These surfactant additives appear to influence reactant decomposition, deposition, and crystallization kinetics. Careful crystallographic analyses revealed that the Te nanorods extend epitaxially from the faceted GeTe surfaces and that this epitaxial interfacing determined the growth direction of the Te nanorods. This system provides an example of how the lattice mismatch between a deposited material and an. underlying substrate can lead to formation of an array of nanowires.
机译：与二苯基锗烷（DPG）和三辛基膦-碲（TOP-Te）在超临界己烷中于460摄氏度，13.6 MPa下进行的反应产生了多面的GeTe颗粒。当将辛醇添加到反应中时，GeTe颗粒形成了排列整齐的Te纳米棒阵列，延伸出了它们的表面。当反应中存在其他添加剂（例如油酸和异戊二烯）时，也会形成这些GeTe / Te异质结构，但是硫醇的加入会抑制Te纳米棒的生长。这些表面活性剂添加剂似乎影响反应物的分解，沉积和结晶动力学。仔细的晶体学分析表明，Te纳米棒从刻面的GeTe表面外延延伸，并且这种外延界面确定了Te纳米棒的生长方向。该系统提供了一个示例，说明了沉积的材料与硅之间的晶格失配。下方的基板可能导致形成纳米线阵列。

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