Superior fast switching of liquid crystal devices using graphene quantum dots

被引：62

作者：

Cho, Min-Jae ^{[1
]}

Park, Hong-Gyu ^{[1
]}

Jeong, Hae-Chang ^{[1
]}

Lee, Jae-Won ^{[1
]}

Jung, Yoon Ho ^{[1
]}

Kim, Dai-Hyun ^{[1
]}

Kim, Jeong-Hwan ^{[1
]}

Lee, Jin-Woo ^{[2
]}

Seo, Dae-Shik ^{[1
]}

机构：

[1] Yonsei Univ, Dept Elect & Elect Engn, Informat Display Device Lab, Seoul 120749, South Korea

[2] Korea Elect Technol Inst, Technol Policy Dept, Songnam, South Korea

来源：

LIQUID CRYSTALS | 2014年 / 41卷 / 06期

关键词：

liquid crystal; graphene; quantum dot; electro-optical properties; ELECTROOPTICAL PROPERTIES; NANOPARTICLES; COMPOSITES; CELLS;

D O I：

10.1080/02678292.2014.889233

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report the doping effect of graphene quantum dots (QDs) in a nematic liquid crystal (NLC) device. The use of graphene QDs leads to improved electro-optical (EO) properties, such as faster response times and a decreased threshold voltage. A 14.8% reduction in the threshold voltage (3.165V), a 30% decrease in the falling time (4.9ms) and a 63.6% decrease in the rising time (2.4ms) were observed for twisted nematic (TN) LC devices (LCDs) that were doped with QDs. We confirm that the doping of the TN-LCD with graphene QDs reduces the field-screening effect, which is caused by impurity ions, whereas the other properties of conventional TN-LCDs are maintained.

引用

页码：761 / 767

页数：7

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