Natural Alkaloids (Caffeine, Theobromine, and Theophylline) as Dielectric Capping Layers for Gold and Aluminum Gate Electrodes in Low Operating Voltage Organic Field-Effect Transistors

• Published in: IEEE journal on flexible electronics Vol. 4; no. 5; pp. 165 - 187
• Main Authors: Irimia, Cristian Vlad, Yumusak, Cigdem, Ban, Boyuan, Leeb, Elisabeth, Mayr, Felix, Schimanofsky, Corina, Mardare, Andrei Ionut, Molnar, Maximilian Alexander, Teichert, Christian, Sariciftci, Niyazi Serdar, Irimia-Vladu, Mihai
• Format: Journal Article
• Language: English
• Published: IEEE 01.05.2025
• Subjects: Caffeine; Chlorine compounds; Consumer electronics; Dielectrics; Electrodes; Force; green materials; Implants; natural alkaloids; natural materials; OFETs; organic dielectrics; organic field-effect transistors; Physics; Probes; sustainable electronics; theobromine; theophylline

Three natural alkaloids, caffeine, theobromine, and theophylline, are reported for their application as dielectric layers in organic field-effect transistors (OFETs) utilizing both gold and aluminum gate electrodes. After careful purification of the materials, a detailed analysis using X-ray diffrac...