Structural and optical properties of iron (III) chloride tetraphenylporphyrin thin filmsM. M. El-Nahass, A. F. El-Deeb, H. S. Metwally and A. M. HassanienEur. Phys. J. Appl. Phys., 52 1 (2010) 10403DOI: https://doi.org/10.1051/epjap/2010134