Volume 4, Issue 2 (2024) – 10 articles
Cover Picture: Soft electronics is considered a significant field in future wearable systems designed for convenient devices, advanced healthcare systems, and human-machine interfaces. Although most focus on developing soft electronics mainly involves field-effect transistors or various sensors, diodes provide rectification and signal processing, which enable stable power management and efficient operation for electronic systems. This work presents a fully soft Schottky diode made entirely from soft components based on a simple fabrication process. For the soft conductor, poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) was blended with PEG and tergitol to ensure high conductivity and enhanced softness. In addition, a composite of poly(3-hexylthiophene) nanofibril (P3HT-NFs) and polydimethylsiloxane (PDMS) was used for the soft semiconductor. The liquid metal successfully forms a Schottky barrier at the interface between the metal and the semiconductor. The fabricated fully soft Schottky diode was utilized to form a fully soft full-wave rectifier and logic gates. The skin-interface energy harvesting system was further demonstrated by integrating with the fully soft rectifier and piezoelectric nanogenerator, which holds significant promise for the advancement of wearable technology, requiring mechanical softness and durability.
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