Nanotechnology & Integrated Bio-Engineering Centre-NIBEC, University of Ulster, UK.
Nanoscale. 2013 Feb 21;5(4):1385-98. doi: 10.1039/c2nr33170e.
Quantum confined silicon nanocrystals (Si-ncs) exhibit intriguing properties due to silicon's indirect bandgap and their highly reactive surfaces. In particular the interplay of quantum confinement with surface effects reveals a complex scenario, which can complicate the interpretation of Si-nc properties and prediction of their corresponding behaviour. At the same time, the complexity and interplay of the different mechanisms in Si-ncs offer great opportunities with characteristics that may not be achievable with other nano-systems. In this context, a variety of carefully surface-engineered Si-ncs are highly desirable both for improving our understanding of Si-nc photo-physics and for their successful integration in application devices. Here we firstly highlight a selection of theoretical efforts and experimental surface engineering approaches and secondly we focus on recent surface engineering results that have utilized novel plasma-liquid interactions.
量子限制硅纳米晶体（Si-ncs）由于硅的间接带隙和其高反应性表面而表现出有趣的性质。特别是量子限制与表面效应的相互作用揭示了一个复杂的情况，这可能会使 Si-nc 性质的解释和对其相应行为的预测复杂化。同时，Si-ncs 中不同机制的复杂性和相互作用提供了很大的机会，具有其他纳米系统可能无法实现的特性。在这种情况下，各种经过精心表面工程设计的 Si-ncs 不仅对于提高我们对 Si-nc 光物理的理解非常重要，而且对于它们在应用设备中的成功集成也非常重要。在这里，我们首先重点介绍了一系列理论研究成果和实验表面工程方法，其次还重点介绍了最近利用新型等离子体-液体相互作用的表面工程成果。
