| 초록 |
By virtue of their unique feature of precise chemical detection, electrical sensors have attracted tremendous interest in environmental pollution monitoring, industrial production, and food safety detection. Organic field-effect transistor (OFET)-based gas sensors, the promising candidates of electrical sensing, have received particular attention owing to their intrinsic advantages in low-cost and portage applications in chemical, biological, and physical monitoring. Gas sensing is in general important for environment and health issues. Ammonia is one of the most harmful environmental pollutants. Here, we report diketopyrrolopyrrole (DPP)-based conjugated polymers showing typical p-type characteristics with high hole mobility. Gas sensing properties were measured upon exposure to ammonia gas. We observed that a gradual negative shift in the transfer curves increased with exposure time and concentration of ammonia gas. |
