易于制造的类互补柔性反相器集成体异质结有机薄膜晶体管具有平衡的电子和空穴迁移率

Logic circuits are a key link in the development from discrete organic thin-film transistors (OTFTs) to integrated circuits (ICs). The development of low-power and easy-to-manufacture logic circuits is an outstanding challenge for emerging flexible and wearable electronics. In this work, we propose a strategy for achieving flexible inverters by a facile manufacture process. The inverters integrate two identical ambipolar OTFTs in series, whose performances are optimized by engineering both gate dielectrics and bulk-heterojunction channels. The polystyrene (PS)/poly(methyl methacrylate) bilayer gate dielectric is employed to consider both mobility and operating voltage of OTFTs. Furthermore, the bulk-heterojunction channels, consisting of binary polymer semiconductors, are proposed and optimized to achieve balanced electronandhole mobilities. The optimal flexible OTFTs exhibit high and well-balanced electron and hole mobilities of 5.41 10^-2 and 6.08 10^-2 cm2/V s, respectively. Furthermore, the high-performance complementary-like flexible inverter is achieved, with a high gain of 38.0 and good noise margin (NM) at a moderate operating voltage of 15 V. This work provides an efficient strategy for developing the potential practical flexible inverters that are manufactured by a facile process flow.