T. M. Mok and S. K. O’Leary, “The Dependence of the Tauc and Cody Optical Gaps Associated with Hydrogenated Amorphous Silicon on the Film Thickness: αl Experimental Limitations and the Impact of Curvature in the Tauc and Cody Plots,” Journal of Applied Physics, Vol. 102, No., 2007, pp. 113525.
http://dx.doi.org/10.1063/1.2817822

has been cited by the following article:

• TITLE: Morphological and Optical Properties of Dimetallo-Phthalocyanine-Complex Thin Films

  AUTHORS: María Elena Sánchez-Vergara, Jose R. Álvarez-Bada, Carlos O. Perez-Baeza, Elías A. Loza-Neri, Ricardo A. Torres-García, Arturo Rodríguez-Gómez, Juan C. Alonso-Huitron

  KEYWORDS: Phthalocyanines; Organic Semiconductors; Thin Films; Optical Gap

  JOURNAL NAME: Advances in Materials Physics and Chemistry, Vol.4 No.2, February 13, 2014

  ABSTRACT: In this work, the synthesis of semiconducting molecular materials formed from metallo-phthalocyanines (MPcs) and bidentate amines is reported. Powder and thin-film samples of the synthesized materials, deposited by vacuum thermal evaporation, show the same intra-molecular bonds in IR-spectroscopy studies. The morphology of the deposited films was studied using scanning electron microscopy and atomic force microscopy. The optical parameters have been investigated using spectrophotometric measurements of transmittance in the wavelength range 200 - 1100 nm. The absorption spectra in the UV-Vis region for the deposited samples showed two bands, namely the Q and Soret bands. The optical band gap values of the thin films were calculated from the absorption coefficient α in the absorption region and were found to be around 1.4 - 1.6 eV. The dependence of the Tauc and Cody optical gaps on the thickness of the film was also determined.