Publications by Moritz Riede

In-situ observation of stacking fault evolution in vacuum-deposited C60

Applied Physics Letters AIP Publishing 111 (2017) 233305

J Martinez Hardigree, IR Ramirez, G Mazzotta, C Nicklin, M Riede

We report an in-situ study of stacking fault evolution in C 60 thin films using grazing-incidence x-ray scattering (GIXS). A Williamson-Hall analysis of the main scattering features during growth of a 15 nm film on glass indicate lattice strain as high as 6% in the first 5 nm of the film, with a decrease to 2% beyond 8 nm thickness. Deformation stacking faults along the {220} plane are found to occur with 68% probability, and closely linked to the formation of a nanocrystalline powder-like film. Our findings, which capture monolayer-resolution growth, are consistent with previous work on crystalline and powder C60 films and provide a crystallographic context for the realtime study of organic semiconductor thin films.

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