Role of Fluorescent Material on Electro-optical Performance of PDLC Devices

ABSTRACT

We investigated the effects of fluorescent material doping on the morphology, electro-optical, and fluorescence properties of PDLC films. The acrylate-based PDLC films prepared by polymerisation induced phase separation via UV curing method were doped with fluorescent material. The impact of fluorescent material on the microstructure was studied using scanning electron microscopy. The effect of fluorescent material on the electro-optical properties of PDLC films was studied by liquid crystal composite parameter tester. The electro-optical study revealed that the addition of fluorescent material results in the reduction of rise time, threshold voltage. The development of fluorescent material doped PDLC films with faster rise time, lower threshold voltage and lower saturation voltage will significantly enhance the potential technological applications of PDLC-based devices for smart windows, sensors and flexible devices.

Graphical abstract

KEYWORDS:

• Fluorescent material
• polymer dispersed liquid crystal
• fluorescent brightening
• electro-optical performance

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the Fundamental Research Funds for the Central Universities [Grant No. FRF-GF-19-003B], the National Natural Science Foundation of China [Grant No. 52073027, 51973017, 51773017], Scientific Research Program Funded by Shanxi Provincial Education Department [Program No. 20JK0959].