Author/Authors :
Katiyar, Rohit Liquid Crystal Research Lab - Department of Physics - University of Lucknow, India , Agrahari, Kaushlendra Liquid Crystal Research Lab - Department of Physics - University of Lucknow, India , Pathak, Govind Centre for Nano and Soft Matter Sciences, Bengaluru, India , Vimal, Tripti Liquid Crystal Research Lab - Department of Physics - University of Lucknow, India , Yadav, Geeta Liquid Crystal Research Lab - Department of Physics - University of Lucknow, India , Kumar Pandey, Kamal Department of Physics - Sri JNMPG College (K.K.C.), Uttar Pradesh, India , Kumar Misra, Abhishek Department of Physics - Govt. V.Y.T. P.G. Autonomous College, Chattisgarh, India , Srivastava, Atul Liquid Crystal Research Lab - Department of Physics - University of Lucknow, India , Manohar, Rajiv Liquid Crystal Research Lab - Department of Physics - University of Lucknow, India
Abstract :
AbstractIn the present study, nematic liquid crystal (NLC) 4′-(Octyloxy)-4-biphenylcarbonitrile dispersed with three different concentrations of silver nanoparticles (Ag NPs) is characterized by electro-optical and dielectric spectroscopy method. The dispersion of Ag NPs into NLC material leads to the change in physical parameters such as dielectric permittivity, photoluminescence, threshold voltage, response time and splay elastic constant. The AC conductivity and threshold voltage of Ag NPs-dispersed composite system have increased significantly. The increase in the AC conductivity for the composite system is attributed to the Ag NPs-assisted induced charge transfer mechanism in the system. Moreover, the increase in AC conductivity value for Ag NPs/NLC composite system discloses its importance in photovoltaic solar cell.
Keywords :
Nematic liquid crystal , Silver nanoparticles , Dielectric anisotropy , Threshold voltage
