论文标题
Heterotwin Zn3p2超晶格纳米线：ins插入在超晶格形成机制中的作用及其光学特性
Heterotwin Zn3P2 superlattice nanowires: the role of indium insertion in the superlattice formation mechanism and their optical properties
论文作者
论文摘要
由于合适的光电特性和地下地壳中构成的元素的结合，磷化锌，Zn3p2，纳米线构成了下一代太阳能电池的前瞻性构建块。沿纳米线轴的周期性上层建筑产生可以提供额外的机制来调整其功能特性。在这里，我们介绍了由周期性异晶驱动的锌磷化物超晶格的蒸气液生长。这种不常见的平面缺陷涉及在双重边界的Zn交换。我们发现，锯齿形超晶格的形成是由液滴的总表面能量减少来驱动的。通过阴极发光测量，整个杂种的化学变化不会影响光学主张的均匀性。这里提供的基本理解带来了关于在纳米线技术中使用II-V半导体的新观点。
Zinc phosphide, Zn3P2, nanowires constitute prospective building blocks for next generation solar cells due to the combination of suitable optoelectronic properties and an abundance of the constituting elements in the Earths crust. The generation of periodic superstructures along the nanowire axis could provide an additional mechanism to tune their functional properties. Here we present the vapour-liquid-solid growth of zinc phosphide superlattices driven by periodic heterotwins. This uncommon planar defect involves the exchange of Zn by In at the twinning boundary. We find that the zigzag superlattice formation is driven by reduction of the total surface energy of the liquid droplet. The chemical variation across the heterotwin does not affect the homogeneity of the optical proerties, as measured by cathodoluminescence. The basic understanding provided here brings new perspectives on the use of II-V semiconductors in nanowire technology.
