Highly Polarized Fluorescent Illumination Using Liquid Crystal Phase

ACS Applied Materials & Interfaces
Min-Jun GimDong Ki Yoon

Abstract

Liquid crystal (LC) materials are currently the dominant electronic materials in display technology because of the ease of control of molecular orientation using an electric field. However, this technology requires the fabrication of two polarizers to create operational displays, reducing light transmission efficiency below 10%. It is therefore desirable to develop new technologies to enhance the light efficiency while maintaining or improving other properties such as the modulation speed of the molecular orientation. Here we report a uniaxial-oriented B7 smectic liquid crystalline film, using fluorescent bent-core LC molecules, a chemically modified substrate, and an in-plane electric field. A LC droplet under homeotropic boundary conditions of air/LC as well as LC/substrate exhibits large focal conic like optical textures. The in-plane electric field induced uniaxial orientation of the LC molecules, in which molecular polar directors are aligned in the direction of the electric field. This highly oriented LC film exhibits linearly polarized luminescence and microsecond time-scale modulation characteristics. The resultant device is both cheap and easy to fabricate and thus has great potential for electro-optic applications, in...Continue Reading

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Citations

Jul 8, 2016·Scientific Reports·Min-Jun GimDong Ki Yoon
Oct 26, 2016·Chemical Communications : Chem Comm·Dae-Yoon KimKwang-Un Jeong
Sep 14, 2018·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Venkatesh GudeKumar Biradha
Feb 15, 2020·Physical Chemistry Chemical Physics : PCCP·Venkatesh GudeKumar Biradha
Aug 10, 2021·Chemical Reviews·Cristián CuervaCarlos Lodeiro
Oct 1, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Wanying ZhangShu Seki
Oct 24, 2017·The Journal of Physical Chemistry. B·Vikas S PadalkarShu Seki

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