Polarization properties of iodine-polyvinyl alcohol polarizers sensitized with graphene oxide

Лихоманова С.В., Зубцова Ю.А., Каманина Н.В. Поляризационные свойства йодно-поливинилспиртовых поляризаторов, сенсибилизированных оксидом графена // Оптический журнал. 2023. Т. 90. № 7. С. 101–106. http://doi.org/10.17586/1023-5086-2023-90-07-101-106

Likhomanova S.V., Zubtsova Ya.A., Kamanina N.V. Polarization properties of iodinepolyvinyl polarizers sensitized with graphene oxide [in Russian] // Opticheskii Zhurnal. 2023. V. 90. № 7. P. 101–106. http://doi.org/10.17586/1023-5086-2023-90-07-101-106

Svetlana V. Likhomanova, Yulia A. Zubtsova, and Natalia V. Kamanina, "Polarization properties of iodine-polyvinyl alcohol polarizers sensitized with graphene oxide," Journal of  Optical Technology. 90(7), 414-416 (2023). https://doi.org/10.1364/JOT.90.000414

Subject of study. Polarization properties of iodine-polyvinyl alcohol polarizers sensitized with graphene oxide at a concentration of 0.1 wt %. Aim of study is obtaining iodine-polyvinyl alcohol polarizers with high polarizing power (90–99%) and transmission of the light flux parallel component (more than 60%) in the visible range of the spectrum. In addition to the indicated spectral and polarizing characteristics, the transverse size of the polarizers should be 8–10 cm, which is suitable for use in various gadgets. Method. To achieve the required width of iodine-polyvinyl alcohol polarizers, the initial films must be stretched 1.8–2 times relative to the initial length. However, this degree of stretching is not sufficient to obtain the required uniaxial orientation of the polymer chains of iodine-containing polyvinyl alcohol and to create a material with the required spectral and polarizing characteristics. For the purpose of additional orientation of polyvinyl alcohol molecules, graphene oxide was used, which made it possible to reduce mechanical tension while maintaining the transverse dimensions. Main results. Spectral measurements of iodine-polyvinyl alcohol polarizers sensitized with graphene oxide demonstrated an increase in the parallel component of the light flux by 5–10%. The polarizing power of polarizers varies from 95 to 99% in the spectral range 450–800 nm. A feature of this work is the degree of stretching of polyvinyl films sensitized with graphene oxide, reduced by a factor of 2. As a result, the size of the obtained iodine-polyvinyl alcohol polarizers in the transverse direction was 8–10 cm. A possible model for the interaction of polymeric molecules of polyvinyl alcohol and graphene oxide is also presented in this paper. The practical significance of the study lies in the possibility of manufacturing iodine-polyvinyl alcohol polarizers 8–10 cm wide for use in modern display technologies while maintaining the main technological process and equipment unchanged.

The authors would like to thank colleagues from the Department of Photophysics of Nanostructured Materials and Devices for discussing the results. The work was carried out with the financial support of the project № 72598 of the Innovation Promotion Fund (2022).