Wang Li
In Situ Self‐Assembly of Nanoscale Particles into Macroscale Ordered Monolayers with Enhanced Memory Performance
Li, Wang; Sun, Ke; Yang, Lisong; Mao, Xi; Deng, Shuai; Jiang, Hui; Gu, Pan; Cao, Bowen; Li, Wen; Yi, Mingdong; Bain, Colin D.; Deng, Renhua; Zhu, Jintao
Authors
Ke Sun
Dr Lisong Yang lisong.yang@durham.ac.uk
Research Associate
Xi Mao
Shuai Deng
Hui Jiang
Pan Gu
Bowen Cao
Wen Li
Mingdong Yi
Professor Colin Bain c.d.bain@durham.ac.uk
Professor
Renhua Deng
Jintao Zhu
Abstract
In situ fabrication of macroscale ordered monolayers of nanoparticles (NPs) on targeted substrates is highly desirable for precision electronic and optical devices, while it remains a great challenge. In this study, a solution is provided to address this challenge by developing a colloidal ink formulation and employing the direct-ink-writing (DIW) technique, where on-demand delivery of ink at a targeted location and directional evaporation with controllable rate are leveraged to precisely guide the deposition of polystyrene-grafted gold NPs (Au@PS NPs) into a macroscale monolayer with an ordered Au NP array embedded in a PS thin film. A 2D steady-state diffusion-controlled evaporation model, which explains the parameter dependence of the experimental results and gives semiquantitative agreement with the experimental evaporation kinetics is proposed. The ordered monolayer is used as both nanocrystal floating gates and the tunneling layer for nonvolatile memory devices. It shows significantly enhanced performance compared with a disordered NP film prepared by spin coating. This approach allows for fine control of NP self-assembly to print macroscaleordered monolayers directly onto substrates, which has great promise for application in broad fields, including microelectronic and photoelectronic devices, sensors, and functional coatings.
Citation
Li, W., Sun, K., Yang, L., Mao, X., Deng, S., Jiang, H., …Zhu, J. (2023). In Situ Self‐Assembly of Nanoscale Particles into Macroscale Ordered Monolayers with Enhanced Memory Performance. Small, 29(11), Article 2207468. https://doi.org/10.1002/smll.202207468
Journal Article Type | Article |
---|---|
Online Publication Date | Dec 23, 2022 |
Publication Date | Mar 15, 2023 |
Deposit Date | Jan 16, 2023 |
Publicly Available Date | Dec 24, 2023 |
Journal | Small |
Print ISSN | 1613-6810 |
Electronic ISSN | 1613-6829 |
Publisher | Wiley |
Peer Reviewed | Peer Reviewed |
Volume | 29 |
Issue | 11 |
Article Number | 2207468 |
DOI | https://doi.org/10.1002/smll.202207468 |
Public URL | https://durham-repository.worktribe.com/output/1181736 |
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