Fabrication of One-Dimensional Organic Nanofiber Networks via Electrophoretic Deposition for a Nonvolatile Memory Device

Cheng Zhang; Hua Li; Shixin Lin; Yanna Su; Qijian Zhang; Yang Li; Kuaibing Wang; Jianmei Lu

doi:10.1021/acsami.0c09763

Fabrication of One-Dimensional Organic Nanofiber Networks via Electrophoretic Deposition for a Nonvolatile Memory Device

ACS Appl Mater Interfaces. 2020 Dec 23;12(51):57254-57263. doi: 10.1021/acsami.0c09763. Epub 2020 Dec 14.

Authors

Cheng Zhang¹, Hua Li¹, Shixin Lin¹, Yanna Su¹, Qijian Zhang², Yang Li³, Kuaibing Wang⁴, Jianmei Lu¹

Affiliations

¹ College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, P. R. China.
² School of Materials Engineering, Changshu Institute of Technology, Changshu, Jiangsu 215500, P. R. China.
³ Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou 215009, China.
⁴ Jiangsu Key Laboratory of Pesticide Sciences, Department of Chemistry, College of Science, Nanjing Agricultural University, Nanjing 210095, P. R. China.

PMID: 33315365
DOI: 10.1021/acsami.0c09763

Abstract

Despite many advanced growth methodologies for organic nanofibers (ONFs), the lack of efficient and scalable ONF-based film preparation technologies has long been a hindrance in their practical application in organic electronic devices. Here, a typical cathode electrophoretic deposition (C-EPD) technology was developed to controllably produce ONFs and their corresponding thin films. Using the solvent effect and an external electric field force during the C-EPD process, a one-dimensional ONF network was formed, which exhibits compact molecular packing and superior optoelectronic properties in the thin-film state. Prototype sandwich-structure memory devices based on these ONF films exhibited a binary nonvolatile memory performance significantly superior than that of the bulk materials. This study provides an efficient and scalable ONF fabrication technology for high-performance electronic devices in various potential applications.

Keywords: cathode electrophoretic deposition; organic memory device; organic nanofiber; pyridinium group; self-assembly.