Changes in optical and sensing properties of 26DCzPPy WOLED material for different molarities

Abstract

In here, changes in sensing and optical properties of 26DCzPPy WOLED material for different molarities were deeply investigated. It was found electrical conductance of 26DCzPPy is increasing with increasing molarity. Also, it has been concluded that the electrical conductance of the material is higher than the optical conductance of the material. The refractive index value of the material varied from 1.88 to 2.03 at 340 nm. The single oscillator energy of the material was found to be 3.78 eV and the dispersion energy of our material was found as 0.82 eV using the single oscillator theory. Furthermore, (αi) molar polarizability of our material was found to be $$1.7081 \times 10^{ - 17} {\text{cm}}^{ - 3}$$ for 83 mM from the theory of Clausius–Mossotti local field polarizability. The lowest contrast value (measuring of sensitivity) of the material was obtained at 83 mM, while the highest value was obtained at 747 mM. It was inferred that an increase in molarity gives rise to a decrease in the refraction angle of the material. Optical band gap (direct-allowed) energies of the material varied from 3.57 eV to 3.52 eV, shows a decreasing trend with increasing molarity. It was obtained that the three peaks of electric susceptibility of the material to be 0.72, 0.74, and 0.75, shows an increasing trend with increasing molarity. Consequently, the key optical and sensitivity properties of the material were determined and discussed depending on different molarity.