Optical, electrical, and gas sensing properties of chloroaluminium phthalocyanine thin film

In this research work, the optical, electrical, and gas sensing properties of Chloroaluminium Phthalocyanine (ClAlPc) thin film have studied. We fabricated sandwich devices of ClAlPc with aluminium electrodes as Al/ClAlPc/Al, using evaporation deposition method in our Laboratory. SEM analysis was carried out to determine the morphology, grains size and thickness of ClAlPc thin film. UV–vis analysis of thin film indicated B and Q absorption bands of ClAlPc, and its optical band gap was then calculated 3.24 eV. The current-voltage characteristic (I-V) of sandwich devices at different temperatures proved the ohmic and SCLC processes in the ClAlPc thin film. By plotting the LnI versus 1000/T graph, the electrical band gap of ClAlPc was obtained 2.88 eV.