Printed flexible thin-film transistors based on different types of modified liquid metal with good mobility

• 来源期刊: 中国科学:化学（英文版）
• 年，卷（期）: 2019,（10）
• 页码范围: 178-189
• 页数: 12页
• 语种: 英文

摘要

High-performance logic circuits fabricated on flexible or unconventional substrates have become a necessity for several new applications.Generally,compared to those fabricated on more rigid substrates,printed,large-area,and flexible thin film transistors (TFTs) are prone to under-performance,which severely limits their practical value.The realization of printed flexible macroelectronics requires advancements in material science and novel fabricating techniques.In this study,using a fast printing process,we manufacture liquid metal-carbon nanotube TFTs on a thin polyethylene terephthalate substrate.These flexible TFTs (ptype) exhibit enhance stability and flexibility,carrier mobility (10.61 cm2V-1s-1),and transconductance (0.88 μS).Furthermore,we realize dependable n-type and ambipolar transistors based on liquid metals with charge transport efficiencies that are comparable to our p-type counterparts,thus providing a foundation for manufacturing integrated circuits and complementary logic gates on flexible substrates.This study shows the positive progress of liquid metal printing-enabled functional devices and discusses the possibility of practical applications;moreover,it sets the foundation for printed high-performance and large-area flexible liquid metal electronics.