Recent Progress in Polymer Gate Dielectrics for Low‐Voltage Organic Field‐Effect Transistors

ABSTRACT Organic field‐effect transistors (OFETs) are indispensable integral parts of the future wearable electronics such as artificial e‐skins, flexible displays, health monitors, and other areas. The power consumption is one of the important issues needed to be addressed for the commercialized of OFETs. Therefore, developing the low‐voltage operation OFETs is urgently needed. The gate is an important functional layer in OFETs, which isolate the charged transport layer and gate electrode, regulate electronic performance, and directly affect the power consumption. In this review, we firstly introduced the basic structures of the OFETs, and the roles of the gate dielectrics in OFETs. Next, we summarized the recent progress in polymer gate dielectrics for low‐voltage OFETs including high‐ k polymers, polymer electrolytes, polymer‐based hybrids, with emphasis on leakage current and operating voltage in the devices. Lastly, challenges and outline future research perspectives of polymer gate dielectrics for future low‐voltage flexible electronics are discussed in conclusion and outlooks.