Dresden 2017 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 82: Nanostructures at Surfaces: Graphene and Other Aspects
O 82.10: Vortrag
Mittwoch, 22. März 2017, 18:15–18:30, REC/PHY C213
Formation of Coupled Organic-Inorganic Nanostructures Studied by X-ray Scattering Techniques — •Santanu Maiti1, Alexander Andre2, Marcus Scheele2, and Frank Schreiber1 — 1Institute of Applied Physics, University of Tuebingen, Auf der Morgenstelle 10, 72076 Tuebingen, Germany — 2Institute of Physical and Theoretical Chemistry, University of Tuebingen, Auf der Morgenstelle 18, 72076 Tuebingen, Germany
Electronically coupled hybrid nanostructures of alternating semiconductor nanocrystal (NC) and monolayer of organic semiconductor (OSC) molecules can exhibit interesting charge carrier transport across the superlattice network. Ordered superlattices of coupled organic-inorganic nanostructures (COINs) are a promising material class to realize and exploit the directional transport as well as exciting optical properties1,2. A combined x-ray reflectivity and grazing incidence scattering (GISAXS and GIWAXS) study during COINs formation (ex- and in-situ) of PbS NCs with different OSCs (CuTAPc/TTFDA) has been carried out3-5. The assembly of nanoparticles and their ordering before and after the ligand exchange process at the air-liquid interface has been monitored. A significant change of about 0.6 and 0.5 nm along the in-plane and out-of-plane direction respectively has been observed after COINs formation. 1. M. P. Boneschanscher et al., Science 344, 1377 (2014); 2. M. Scheele et al., PCCP 17, 97 (2015); 3. S. Maiti et al., J. Phys.: Condens. Matter, 25, 395401 (2013); 4. J. Novak et al., ACS Appl. Mater. Interfaces 8, 22526 (2016); 5. A. Andre et al., Chem. Mater. 27, 8105 (2015).