Changes in Optical Properties of Azopolymers in an Electric Field

Abstract

We report the preliminary results obtained for polymers incorporating the azobenzene side-group as an optically active molecule. The reversible change of the thin film absorption is observed when illuminating it with monochromatic linearly polarized light under the applied external DC field. The magnotude of a change depends on the angle between the light polarization and the DC electric field direction.

Blueshifted dielectric properties and optical conductivity of new nanoscale nickel-(II)-tetraphenyl-21H,23H-porphyrin films as a function of UV illumination for energy storage applications

“…The characterization and properties of organic or inorganic materials may be affected by different operators (El-Denglawey et al 2018), such as physical and/or artificial aging for a short or long time (Saiter 2001;2016;Alburaih and El-Denglawey 2017), annealing (Özdal et al 2020;Al-Harbi et al 2020), illumination (Li et al 2020), deposition method (Al-Asbahi et al 2020), preparation factors (Alburaih and El-Denglawey 2017), chemical ratios (Figa et al 2015), doping (Kulyk et al 2020;Leo and Hummert 2013), chemical purity (Andirova et al 2016), material form (thin or bulk) (Deepthi et al 2020), thickness (Idris et al 2020), structural phases and parameters (Souleh et al 2020;Kumar et al 2020), alloying (Yang et al 2020), film holder type or substrate (Wang et al 2020), application of electric fields (Smokal 2020), andradiation (Tamilselvana et al 2014).…”