Curing temperature-dependent physicochemical reconstruction of strontium aluminum lanthanum oxide film for enhanced liquid crystal systems

Dong Hyun Kim, Dong Wook Lee, Jin Young Oh, Jonghoon Won, Jong In Jang, Hae Chang Jeong, Dae Shik Seo

Research output: Contribution to journalArticlepeer-review

Abstract

A strontium-aluminum-lanthanum oxide (SrAlLaO) solution was prepared using the sol–gel method and brush-coated on ITO glass. The shear stress generated by brush coating aligns the SrAlLaO in one direction and creates a groove-shaped nanostructure. To confirm this, film surface analysis was conducted. The morphology of the surface was analyzed using atomic force microscopy, and the molecular composition of the surface was confirmed using x-ray photoelectron spectroscopy. By measuring the optical transmittance, the applicability to optical devices was confirmed. Additionally, it was analyzed whether the SrAlLaO film in which the nanostructure occurred functions as an LC alignment layer. For analysis, polarized optical microscopy and pretilt angle measurement were used. The groove structure and LC alignment were confirmed in the SrAlLaO film cured at 280 °C. Graphical abstract: [Figure not available: see fulltext.].

Original languageEnglish
Article number790
JournalApplied Physics A: Materials Science and Processing
Volume128
Issue number9
DOIs
Publication statusPublished - 2022 Sept

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (Grant No. 2020R1G1A1013604).

Publisher Copyright:
© 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature.

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Materials Science

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