Inorganic nanoparticle multilayers using photo-crosslinking layer-by-layer assembly and their applications in nonvolatile memory devices
- Authors
- Cheong, Sanghyuk; Kim, Younghoon; Kwon, Taegyun; Kim, Bumjoon J.; Cho, Jinhan
- Issue Date
- 2013
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- NANOSCALE, v.5, no.24, pp.12356 - 12364
- Indexed
- SCIE
SCOPUS
- Journal Title
- NANOSCALE
- Volume
- 5
- Number
- 24
- Start Page
- 12356
- End Page
- 12364
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/106533
- DOI
- 10.1039/c3nr04547a
- ISSN
- 2040-3364
- Abstract
- We introduce a general and facile method for the preparation of organic/inorganic nanoparticle (NP) nanocomposite multilayer films that allows vertical growth of various NP layers (i.e., metal or transition metal oxide NPs) in a densely packed structure. Our approach is based on the successive photo-crosslinking layer-by-layer (LbL) assembly between hydrophobic ligands onto a NP surface and photoinitiator (PI) molecules. Therefore, our approach requires neither the additional surface modification needed for well-defined NPs synthesized in organic media nor the deposition step that inserts a polymer layer bridge between adjacent inorganic NP layers in the preparation of traditional LbL-assembled NP films. We also demonstrate that photo-crosslinking LbL-assembled (metal oxide NP)(n) films could be used as a nonvolatile memory layer without a high-temperature thermal treatment, unlike conventional vacuum-deposition-or sol-gel-derived memory devices, which require thermal treatments at temperatures greater than 200 degrees C. This robust method could open a facile route for the design of functional NP-based electronic devices.
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Collections - College of Engineering > Department of Chemical and Biological Engineering > 1. Journal Articles
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