Studies on One-Step-Processed Interface Controls and Performance Optimizations of Organic Transistors by Employing Spontaneous Self-Reactive Molecules
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In previous studies, The process for OFET fabrication increases due to additional step-by-step surface treatment techniques for each interface control, leading to increased process time and costs. In this study, we developed a blending solution simultaneously improves both interfaces, achieving enhancements in the device's electrical performance and benefits such as simplification of the OFET fabrication process and cost reduction. When the mixture of organic semiconductor and Self-Reactive molecules (SRM) is used in the organic active layer, the two types of SRM materials spontaneously react selectively at the electrode and insulator interfaces, respectively, allowing surface control through the functional groups introduced by the SRM, enabling a single process without separate optimization process. Unreacted SRM materials are volatile and will be removed from the existing heat treatment process, thereby avoiding trap generation, device stability reduction, and reliability reduction.