Electrical conduction mechanism of carmoisine dye-based natural organic device

Here, the AC and DC conduction mechanisms of the carmoisine dye-based device have been extensively studied as this dye possesses good electrical conductivity. The optical bandgap of this dye was measured using absorption spectroscopy and was found to be 2.14 eV. An impedance spectrometer was used to measure the DC electrical conductivity of this dye within the temperature range of 273-353 K. The dye exhibits a conductivity of 5.07 x 10(-8) (& omega;m)(-1) in the low-temperature zone and 1.22 x 10(-5) (& omega;m)(-1) in the high-temperature region. Using the well-known Arrhenius equation, the activation energy was calculated, yielding values of 1.24 eV and 1.65 eV for low and high-temperature zones, respectively. Additionally, AC conductivity tests were performed with the frequency from 500 Hz to 100 kHz and in between the temperatures range 273-343 K. At the AC field, activation energy was estimated to be 0.253 eV. It has been discovered that in high-temperature locations, DC conductivity is greater than AC conductivity, and the DC field has a higher activation energy. Using a barrier hopping mechanism, the lowering of activation energy in an AC field has been studied. The value of polaron binding energy is near about 3.00 x 10(-19) eV. The density of localized state lies between 1.95 x 10(22) and 6.65 x 10(22) eV(-1) cm(-3).