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Liquid Crystals Volume 47, 2020 - Issue 11
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Article

Multi-layered carbon nanotube UV polariser for photo-alignment of liquid crystals

Hoon Sub Shina Applied Materials Institute for BIN Convergence, Department of BIN Convergence Technology and Department of Polymer Nano Science and Technology, Jeonbuk National University, Jeonju, Korea;b LG Display Co., Ltd, Gumi, Gyungbuk, KoreaView further author information
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Ramesh Mandaa Applied Materials Institute for BIN Convergence, Department of BIN Convergence Technology and Department of Polymer Nano Science and Technology, Jeonbuk National University, Jeonju, KoreaORCID Iconhttps://orcid.org/0000-0002-6171-7991View further author information
ORCID Icon,
Tae Hyung Kima Applied Materials Institute for BIN Convergence, Department of BIN Convergence Technology and Department of Polymer Nano Science and Technology, Jeonbuk National University, Jeonju, KoreaView further author information
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Jong Gil Parkc Center for Integrated Nanostructure Physics(CINAP), Institute for Basic Science(IBS), Sungkyunkwan University, Suwon, Korea;d Department of Energy Science, Sungkyunkwan University, Suwon, KoreaView further author information
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Young Jin Lima Applied Materials Institute for BIN Convergence, Department of BIN Convergence Technology and Department of Polymer Nano Science and Technology, Jeonbuk National University, Jeonju, KoreaView further author information
,
Byeong Koo Kimb LG Display Co., Ltd, Gumi, Gyungbuk, KoreaView further author information
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Young Hee Leec Center for Integrated Nanostructure Physics(CINAP), Institute for Basic Science(IBS), Sungkyunkwan University, Suwon, Korea;d Department of Energy Science, Sungkyunkwan University, Suwon, KoreaView further author information
&
Seung Hee Leea Applied Materials Institute for BIN Convergence, Department of BIN Convergence Technology and Department of Polymer Nano Science and Technology, Jeonbuk National University, Jeonju, KoreaCorrespondence[email protected]
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Pages 1604-1611 | Received 03 Feb 2020, Accepted 31 Mar 2020, Published online: 22 Apr 2020
 
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ABSTRACT

An efficient ultraviolet (UV) polariser based on multi-layered carbon nanotubes (CNTs) which is obtained by set of CNT films attached to substrate in series with matching orientations is demonstrated. The degree of polarisation in the UV region increases with increasing number of CNT layers, reaching ~91% in the CNT polariser with 12 layers. A thin film with photoalignment polymer exposed with more than eight layers CNT polariser induces excellent homogenous liquid crystal (LC) alignment. The fringe-field switching (FFS) LC device with the photoalignment layer shows excellent electro-optics comparable to that with conventional metallic wire-grid polariser (WGP). The work proposes cost-effective novel polariser replacing WGP for photoalignment of LC.

GRAPHICAL ABSTRACT

Disclosure statement

The authors declare no competing financial interest.

Additional information

Funding

This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2016R1D1A1B01007189) and the Korea Government (MSIT) funded through the National Research Foundation of Korea (NRF) (No. 2019R1A5A8080326).

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