The Electro-optical study of Al₂O₃ nanoparticles doped polymer dispersed liquid crystal films

ABSTRACT

The electro-optical characteristics of nanoparticles-doped polymer dispersed liquid crystals (PDLCs) have been investigated for display applications. The PDLC samples were obtained by polymerisation induced phase separation of the nematic liquid crystal LC-nanoparticles-prepolymer mixtures under UV illumination with a constant intensity. The effect of Al₂O₃ nanoparticles doping on the PDLC system was studied. It was seen that the electro-optical characteristics of PDLC were dependent on the amount of Al₂O₃ nanoparticles used. The effect of morphology on the electro-optical properties was examined, and the experimental results indicated that the driving voltage was affected considerably by the amount of Al₂O₃ nanoparticles. The results showed that the nanoparticles concentration can be optimised to obtain promising electronic materials with a minimum threshold for display applications.

Graphical Abstract

KEYWORDS:

• Electro-optical characteristics
• phase separation
• Al₂O₃ nanoparticles
• morphology

Acknowledgments

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 Shaanxi Provincial Education Department (Program No.20JK0959).

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by the Natural Science Basic Research Plan in Shaanxi Province of China (Program No.2021JM-531, No.2021GY-205, No.2021JQ-877), 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 Shaanxi Provincial Education Department (Program No.20JK0959).