LAUSR

Metallic phthalocyanines (M-Pcs) have superior structure, electrical and optical properties. Therefore, M-Pcs can be used as alternatives to traditional semiconductors. In the present work, indium phthalocyanine chloride (ClInPc) is compressed to form a bulk structure (pellet). The prepared ClInPc pellet is characterized by differential scanning Calorimetry (DSC), and impedance spectroscopy in the frequency range of 0.15–100 kHz and at different temperatures (293–393 K). The DSC analysis of the ClInPc shows only one order phase transition at 196 °C. Additionally, the impedance spectroscopy reveals that the capacitance, dissipation factor, dielectric constant, and ac electrical conductivity of the ClInPc are temperature and frequency dependent. The ClInPc also exhibits a high capacitance of order 2–12 nF. Further, the dielectric constant of such material increases by increasing the temperature which involves the distribution of relaxation times. Furthermore, the AC conductivity follows Jonscher’s universal power law σac = AωS. The temperature dependent exponents S and m also outweigh the correlated barrier hopping (CBH) model for conduction mechanism.