Materials and Surface Science Institute and Department of Chemical and Environmental Sciences,University of Limerick, Limerick, Ireland.
ACS Nano. 2012 Aug 28;6(8):6977-83. doi: 10.1021/nn301999b. Epub 2012 Jul 12.
Here, we report self- and directed assembly of CuIn(1-x)Ga(x)S(2) (CIGS) nanorods into highly ordered 2D and 3D superstructures. The assembly protocol is dictated by the ligand environment and is hence chemically tunable. Thiol capped nanorods spontaneously assemble into 3D aligned nanorod clusters over a period of hours with end to end and side to side order. These clusters can be disassembled by ligand exchange with an amine and subsequently reassembled either at a substrate interface or as free floating 2D sheets by directed assembly protocols. This dimensional control of CIGS nanorod assembly, extending over device scale areas with high degrees of order, is highly attractive for applications utilizing these important quaternary photoabsorbers.
在这里，我们报告了 CuIn(1-x)Ga(x)S(2)（CIGS）纳米棒的自组装和定向组装成高度有序的二维和三维超结构。组装方案由配体环境决定，因此可以进行化学调控。巯基封端的纳米棒在数小时内自发组装成 3D 有序的纳米棒簇，具有端到端和侧到侧的有序性。这些簇可以通过与胺的配体交换进行解组装，然后通过定向组装方案在基底界面上或作为自由漂浮的二维片重新组装。这种对 CIGS 纳米棒组装的维度控制，可以在具有高度有序性的器件尺度区域上进行，对于利用这些重要的四元光吸收体的应用具有很大的吸引力。
