Reference : Quantitative Structural Analysis of Binary Nanocrystal Superlattices by Electron Tomo...
Scientific journals : Article
Engineering, computing & technology : Materials science & engineering
Physical, chemical, mathematical & earth Sciences : Chemistry
Quantitative Structural Analysis of Binary Nanocrystal Superlattices by Electron Tomography
Friedrich, Heiner [ > > ]
Gommes, Cédric mailto [Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Génie catalytique >]
Overgaag, Karin [ > > ]
Meeldijk, Johannes [ > > ]
Evers, Wiel [ > > ]
de Nijs, Bart [ > > ]
Boneschanscher, Mark [ > > ]
de Jongh, Petra [ > > ]
Verkleij, Arie [ > > ]
de Jong, Krijn [ > > ]
Van Blaaderen, Alfons [ > > ]
Vanmaekelbergh, Daniel [ > > ]
Nano Letters
American Chemical Society
Yes (verified by ORBi)
[en] Electron Tomography ; Image Analysis ; Colloidal Crystals
[en] Binary nanocrystal superlattices, that is, ordered structures of two sorts of nanocolloids, hold promise for a series of functional materials with novel collective properties. Here we show that based on electron tomography a comprehensive, quantitative, three-dimensional characterization of these systems down to the single nanocrystal level can be achieved, which is key in understanding the emerging materials properties. On four binary lattices composed of PbSe, CdSe, and Au nanocrystals, we illustrate that ambiguous interpretations based on two-dimensional transmission electron microscopy can be prevented, nanocrystal sizes and superlattice parameters accurately determined, individual
crystallographic point and plane defects studied, and the order/disorder at the top and bottom surfaces imaged. Furthermore, our results suggest that superlattice nucleation and growth occurred at the suspension/air interface and that the unit cells of some lattices are anisotropically deformed upon drying.
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS

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