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Electro-optical properties of solution-processed aluminum–nickel oxide film containing graphene oxide in liquid crystal system

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Abstract

Aluminum–nickel oxide and graphene oxide hybrid films are investigated in this study. The films produced via solution processing were doped with GO at three concentrations: 0, 5, and 15 wt%. The optical transmittances of the produced hybrid AlNiO films were examined for liquid crystal device applications, and their chemical properties were assessed via X-ray photoelectron spectroscopy. Atomic force microscopy and line profiling were used to examine the film surfaces. Polarized optical microscopy and pretilt angle analysis were used to confirm the uniform and homogeneous LC alignment on the hybrid AlNiO layer. The anisotropic oriented nano/microgroove structures on the surfaces of the films are believed to be due to the shear stress generated by the brush-coating process. LC cells assembled using the hybrid films showed stabler and faster switching performances with increasing GO doping. GO doping of the pure AlNiO film was also noted to increase the LC polar anchoring energy.

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Data Availability Statement

The raw/processed data required to reproduce these findings are available from the corresponding authors upon reasonable request. The manuscript has associated data in a data repository.

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Acknowledgements

This research was supported by the National Research Foundation of Korea (NRF) Grant funded by the Korean government (MSIT) (No. 2022R1F1A106419213). This research was supported by the Research Grant of Jeonju University in 2023.

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Authors and Affiliations

  1. IT Nano Electronic Device Laboratory, Department of Electrical and Electronic Engineering, Yonsei University, Seodaemun-gu, Seoul, 120-749, Republic of Korea

    Jin Young Oh, Da Bin Yang, Bo-Kyeong Choi & Dae-Shik Seo

  2. National Center for Nanoprocess and Equipment, Korea Institute of Industrial Technology, 6 Cheomdangwagi-ro 208beon-gil, Buk-gu, Gwangju, 500-480, Republic of Korea

    Eun Mi Kim & Gi Seok Heo

  3. Department of Electronic Engineering, Cheongju University, 298 Daesung-ro, Cheongju, 28503, Republic of Korea

    Dong Hyun Kim

  4. Department of Electrical and Electronic Engineering, Jeonju University, 303 Cheonjam-ro, Wansan-gu, Jeonju-si, Jeollabuk-do, 55069, Republic of Korea

    Dong Wook Lee

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  1. Jin Young Oh
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Contributions

JYO contributed to conceptualization, formal analysis, and writing the original draft. EMK contributed to investigation and validation. GSH and DHK contributed to investigation and visualization. DBY contributed to validation and visualization. BKC contributed to resources and validation.. DWL contributed to formal analysis and supervision. D-SS contributed to funding acquisition and project administration.

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Correspondence to Dong Wook Lee or Dae-Shik Seo.

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The authors declare that they have no known competing financial interests or personal relationships that could have influenced the work reported in this paper.

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Oh, J.Y., Kim, E.M., Heo, G.S. et al. Electro-optical properties of solution-processed aluminum–nickel oxide film containing graphene oxide in liquid crystal system. Eur. Phys. J. Plus 139, 309 (2024). https://doi.org/10.1140/epjp/s13360-024-05110-5

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