Chloro-substituted metallo-phthalocyanines (TiPcCl, MnPcCl, InPcCl, AlPcCl) applied to organic devices.

Chlorinated phthalocyanines-TiPcCl₂, MnPcCl, InPcCl, and AlPcCl-were studied as organic semiconductors and, in this framework, their behavior as a buffer layer. Initially, these metallophthalocyanines were characterized in solution using UV-visible spectroscopy to determine their optical band gaps, with results compared to density functional theory (DFT) calculations. The phthalocyanines were subsequently deposited as films via high-vacuum sublimation, and optically characterized to assess their reflectance and band gaps using the Kubelka-Munk function, with the lowest band gap for MnPcCl of 1.