journal article·2020-04-28

Nonvolatile Transistor Memory Based on a High-k Dielectric Polymer Blend for Multilevel Data Storage, Encryption, and Protection

Xiaosong Wu, Shiyu Feng, Jinghui Shen, Wei Huang, Cong Li, Caicong Li, Yuan Sui, Weiguo Huang

Chemistry of Materials· Volume 32· Issue 8
Publisher page

Abstract

Nonvolatile transistor memories (NVTMs) are fabricated based on a polymer blend dielectric containing poly(pentafluorophenyl acrylate) (pPFPA) and branched-poly(ethylene imine) (bPEI). Detailed studies reveal this dielectric not only exhibits a high dielectric constant (k = 285 at 20 Hz), apparent polarization hysteresis, and robust mechanical properties but also endows a transistor (PBTTT-C14 as semiconductor) with ultrahigh mobilities (7.5 cm2 V–1 s–1) and on/off ratios (107). By virtue of this, NVTMs possessing an eight-level storage capability at low operating gate voltages are demonstrated, with good data retention and endurance of over 105 s and 100 cycles, respectively. More importantly, the drain current can also be well controlled by the gate voltage pulse width, leading to NVTMs with two-dimensional (voltage and time) storage capability. Further, the application of the NVTMs to data recording, encryption, and protection is demonstrated, with a desirable security feature, opening the door to NVTMs with higher performance.
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Research context

OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Advanced Memory and Neural Computing · Conducting polymers and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao West Road, Fuzhou, Fujian 350002, P. R. China

College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian 350002, P. R. China

University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, P. R. China

College of Chemistry and Environmental Science, Hebei University, Baoding 071002, P. R. China

School of Resources Environmental & Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330000, P. R. China

Funding

Fujian Institute of Research on the Structure of Matter · National Natural Science Foundation of China · Chinese Academy of Sciences · Central Committee of the Communist Party of China

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