Flexible Organic Transistors with Hybrid Gate Dielectric Consisting Albumen as an Edible Component

Flexible electronics utilizing emerging edible natural materials as device components lead a path towards the development of cost-effective, renewable, sustainable, and eco-friendly smart systems. Here, an edible and natural biopolymer egg albumen was explored with a thin high-k HfO2 layer to form a hybrid gate dielectric layer for the demonstration of flexible organic transistors. The thin high-k dielectric layer enables the devices to be operated at low voltage while the biopolymer layer helps in forming a better dielectric semiconductor interface. The fabricated devices have shown excellent p-channel characteristics at a low operating voltage of -5 V. Moreover, these devices exhibited good electrical and operational stability to be used in practical applications. These findings suggest that this proposed gate dielectric combination can be an interesting and potential component for flexible organic devices.