Quantifying Angular Correlations between the Atomic Lattice and Superlattice of Nanocrystals Assembled with Directional Linking
| Autor: | Zaluzhnyy, Ivan. A., Kurta, Ruslan P., Andre, Alexander, Gorobtsov, Oleg Y., Rose, Max, Skopintsev, Petr, Besedin, Ilya, Zozulya, Alexey V., Sprung, Michael, Schreiber, Frank, Vartanyants, Ivan A., Scheele, Marcus |
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| Rok vydání: | 2017 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1021/acs.nanolett.7b00584 |
| Popis: | We show that the combination of X-ray scattering with a nanofocused beam and X-ray cross correlation analysis is an efficient means for the full structural characterization of mesocrystalline nanoparticle assemblies with a single experiment. We analyze several hundred diffraction patterns of individual sample locations, i.e. individual grains, to obtain a meaningful statistical distribution of the superlattice and atomic lattice ordering. Simultaneous small- and wide-angle X-ray scattering of the same sample location allows us to determine the structure and orientation of the superlattice as well as the angular correlation of the first two Bragg peaks of the atomic lattices, their orientation with respect to the superlattice, and the average orientational misfit due to local structural disorder. This experiment is particularly advantageous for synthetic mesocrystals made by the simultaneous self-assembly of colloidal nanocrystals and surface-functionalization with conductive ligands. While the structural characterization of such materials has been challenging so far, the present method now allows correlating mesocrystalline structure with optoelectronic properties. Comment: 21 page, 5 figures, 11 pages supplemental information containing 3 figures |
| Databáze: | arXiv |
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