Optical and Electrical Characterization of 4,6-Diacetylresorcinol and 4,6-Bis(1-hydrazonoethyl)benzene-1,3-diol and Their Photo-Applications

Abstract

In this research, we provide the first optical and electrical characterization of 4,6-diacetylresorcinol and 4,6-bis(1-hydrazonoethyl)benzene-1,3-diol. The optical properties have been studied by measuring the diffused reflectance. Both materials have indirect optical transitions with energy gaps of 1.91 and 1.83 eV, respectively.  AC  electrical  conductivity  of  both materials  increases  with  increasing  the  applied  frequency  (1 kHz–5 MHz).  It  obeys  σ_ac (ω)=B ω^S  with  S  about  unity  and  is  explained  in  terms  of  correlated  barrier  hopping  model.  4,6-Diacetylresorcinol has higher values of AC conductivity and dielectric constant than those of 4,6-bis(1-hydrazonoethyl)benzene-1,3-diol. Finally, 4,6-bis(1-hydrazonoethyl)benzene-1,3-diol could be employed as a dye to form dye-sensitized solar cells for photosensing applications.