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Mono- and Multilayer Silicene-Type Honeycomb Lattices by Oriented Attachment of PbSe Nanocrystals: Synthesis, Structural Characterization, and Analysis of the Disorder.
Chemistry of Materials ( IF 7.2 ) Pub Date : 2018-07-03 , DOI: 10.1021/acs.chemmater.8b02178 Joep L Peters 1 , Thomas Altantzis 2 , Ivan Lobato 2 , Maryam Alimoradi Jazi 1 , Carlo van Overbeek 1 , Sara Bals 2 , Daniel Vanmaekelbergh 1 , Sophia Buhbut Sinai 1
Chemistry of Materials ( IF 7.2 ) Pub Date : 2018-07-03 , DOI: 10.1021/acs.chemmater.8b02178 Joep L Peters 1 , Thomas Altantzis 2 , Ivan Lobato 2 , Maryam Alimoradi Jazi 1 , Carlo van Overbeek 1 , Sara Bals 2 , Daniel Vanmaekelbergh 1 , Sophia Buhbut Sinai 1
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Nanocrystal (NC) solids are commonly prepared from nonpolar organic NC suspensions. In many cases, the capping on the NC surface is preserved and forms a barrier between the NCs. More recently, superstructures with crystalline connections between the NCs, implying the removal of the capping, have been reported, too. Here, we present large-scale uniform superstructures of attached PbSe NCs with a silicene-type honeycomb geometry, resulting from solvent evaporation under nearly reversible conditions. We also prepared multilayered silicene honeycomb structures by using larger amounts of PbSe NCs. We show that the two-dimensional silicene superstructures can be seen as a crystallographic slice from a 3-D simple cubic structure. We describe the disorder in the silicene lattices in terms of the nanocrystals position and their atomic alignment. The silicene honeycomb sheets are large enough to be used in transistors and optoelectronic devices.
中文翻译：
PbSe纳米晶体的定向附着的单层和多层硅型蜂窝状晶格：合成，结构表征和无序分析。
纳米晶体（NC）固体通常由非极性有机NC悬浮液制备。在许多情况下，保留NC表面上的封盖并在NC之间形成屏障。最近，也已经报道了在NC之间具有晶体连接的上层建筑，这意味着移除了封盖。在这里，我们介绍了在几乎可逆的条件下，由于溶剂蒸发而导致的，具有硅型蜂窝形状的PbSe NCs的大型均匀上部结构。我们还通过使用大量的PbSe NCs制备了多层硅蜂窝结构。我们表明，二维硅超结构可以看作是从3-D简单立方结构的晶体切片。我们根据纳米晶体的位置及其原子排列描述了硅晶格中的无序。
更新日期：2018-07-03
中文翻译：
PbSe纳米晶体的定向附着的单层和多层硅型蜂窝状晶格：合成，结构表征和无序分析。
纳米晶体（NC）固体通常由非极性有机NC悬浮液制备。在许多情况下，保留NC表面上的封盖并在NC之间形成屏障。最近，也已经报道了在NC之间具有晶体连接的上层建筑，这意味着移除了封盖。在这里，我们介绍了在几乎可逆的条件下，由于溶剂蒸发而导致的，具有硅型蜂窝形状的PbSe NCs的大型均匀上部结构。我们还通过使用大量的PbSe NCs制备了多层硅蜂窝结构。我们表明，二维硅超结构可以看作是从3-D简单立方结构的晶体切片。我们根据纳米晶体的位置及其原子排列描述了硅晶格中的无序。
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