Strongly Enhanced Thermal Stability of Crystalline Organic Thin Films Induced by Aluminum Oxide Capping Layers
Stefan Sellner, Alexander Gerlach, Frank Schreiber, Marion Kelsch, Nikolai Kasper, Helmut Dosch, Stephan Meyer, Jens Pflaum, Matthias Fischer, Bruno Gompf
Abstract
We show that the thermal stability of thin films of the organic semiconductor diindenoperylene (DIP) can be strongly enhanced by aluminum oxide capping layers. By thermal desorption spectroscopy and in-situ X-ray diffraction we demonstrate that organic films do not only stay on the substrate, but even remain crystalline up to 460C, i.e. 270 deg. above their desorption point for uncapped films (190C). We argue that this strong enhancement of the thermal stability compared to uncapped and also metal-capped organic layers is related to the very weak diffusion of aluminum oxide and the structurally well-defined as-grown interfaces. We discuss possible mechanisms for the eventual breakdown at high temperatures.
Create a lesson
Related papers
Composition-controlled optical fingerprints and anisotropy of self-trapped excitons in double perovskites
Simone Grillo, Offir Zachs Maishlos, Liya Koren et al.
Time-Resolved Phonon Dispersions of Thermally Excited Graphite at the Nanoscale
Mairi McCauley, Christoph T. Koch, Benedikt Haas
Direct growth of crystalline spinel GaON films: A wide-bandgap mixed-anion semiconductor
Baikui Li, Zecheng Yang, Wenhao Yin et al.
A Transferable Machine-Learned Potential Enabling Large-Scale Copper-Carbon Simulations from Equilibrium to Extreme Conditions
Feiyu Zhou, Wei Qiu, Yan Chen et al.
Imaging Gate-Tunable Single-Layer Molecular Kagome Lattices
Ziyi Wang, Rafal Zuzak, Weichen Tang et al.
Flexoelectricity and Flexomagnetism
Alexander Edström, Massimiliano Stengel