Facile maskless fabrication of organic field effect transistors on biodegradable substrates

Alessandra Campana, Tobias Cramer, Pierpaolo Greco, Giulia Foschi, Mauro Murgia and Fabio Biscarini

Appl. Phys. Lett. 2013, 103, 073302.


Fabrication of a test pattern with interdigitated gold electrodes (channel length 12 μm) on a biodegradable substrate is achieved by direct laser ablation of a Au film using a high-precision multifunction infrared-laser scan marker. The whole process involves two solvent-free steps: Au film deposition by sublimation followed by maskless ablation. The approach is suited for fast prototyping of a variety of materials. We demonstrate the fabrication of a water-gated organic field effect transistor on the biodegradable poly(lactic-co-glycolic acid) scaffold and its operations in water.