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发布时间：2019-03-11

论文类型：期刊论文

发表时间：2017-10-30

发表刊物：APPLIED PHYSICS LETTERS

收录刊物：Scopus、EI、SCIE

卷号：111

期号：18

ISSN号：0003-6951

摘要：Future flexible electronic systems require memory devices combining low-power operation and mechanical bendability. However, high programming/erasing voltages, which are universally needed to switch the storage states in previously reported ferroelectric organic field-effect transistor (Fe-OFET) nonvolatile memories (NVMs), severely prevent their practical applications. In this work, we develop a route to achieve a low-voltage operating flexible Fe-OFET NVM. Utilizing vertical phase separation, an ultrathin self-organized poly(styrene) (PS) buffering layer covers the surface of the ferroelectric polymer layer by one-step spin-coating from their blending solution. The ferroelectric polymer with a low coercive field contributes to low-voltage operation in the Fe-OFET NVM. The polymer PS contributes to the improvement of mobility, attributing to screening the charge scattering and decreasing the surface roughness. As a result, a high performance flexible FeOFET NVM is achieved at the low P/E voltages of610 V, with a mobility larger than 0.2 cm(2) V-1 s(-1), a reliable P/E endurance over 150 cycles, stable data storage retention capability over 10(4) s, and excellent mechanical bending durability with a slight performance degradation after 1000 repetitive tensile bending cycles at a curvature radius of 5.5mm. Published by AIP Publishing.