Exploration of Light and Temperature Sensing Capabilities of Solution Processed Flexible Organic Transistors

Flexible organic transistors fabricated with a bilayer gate dielectric consisting a high-k HfO2 and low-k PVP polymer were comprehensively explored for performance. The fabricated p-channel transistors exhibited 10 V operation with high electrical stability and repeatability. Sensing capabilities of devices were investigated specifically for parameters such as temperature and light. These devices exhibited very good sensing of light with quick dynamic response. Moreover, a very high sensitivity for temperature as low as 1 mV/°C in range of -10 to 70 °C was achieved. Our results indicate that these devices can further be explored for excellent sensing capabilities.