Fabrication and Characterization of Optical and Electri-cal properties of BrInPcs Sandwich Nanostructures

In this work, we report on the fabrication, morphology, and electrical and optical characterization of sandwich devices of bromo indium phthalocyanine thin film nanostructures in aluminum electrodes using electron beam evaporation in a high vacuum which are promising for sensing applications. We investigate the influence of both parameters of temperature and frequency on the conduction mechanism to deter-mine the transport process of the charge carriers. Result demonstrates that the capacitance and the loss factor decrease with increasing the frequency and increase for high temperatures. The behavior of the ca-pacitance and loss factor fits well with the model of Goswami and Goswami and the results imply the domination of the hopping theory. In addition, analysis of absorption spectrum indicates that the optical band gap energy is 3eV. Furthermore, morphological analysis demonstrates that all films have a smooth surface with homogeneous small crystal grains with a nanoscale size order of 40 ±10nm. Thus, tempera-ture and frequency dependent experiments of optical and electrical parameters of the bromo indium phthalocyanine thin film nanostructures show their potential to be employed for developing a multifunc-tion sensor.