Palladium Films as Electrodes on Carbyne-Based Devices

Palladium contacts were deposited on a carbyne-enriched nanocoating, and the sheet resistance of the carbyne material was measured before and after the deposition of different thicknesses of the electrode films, to explore if there is unwanted interaction between the materials in contact. It was deduced diffusion of palladium particles into the carbyne, and it was found that it is thickness dependent. It was found that ~200 nm Pd films caused variation of the carbyne film’s sheet resistance from 130 to 118 kΩ/sq and 400 nm Pd resulted in a 27.9 kΩ/sq of the carbyne, which requires an additional blocking layer to prevent the diffusion process. Nickel thin film proved to be an effective barrier to resolving this issue. Studying contacts between a variety of metals and carbyne film is of great importance for the fabrication of future organic chip devices.