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Influence of central metal atom in MPc (M = Cu, Zn, Mg, Co) on Raman, FT-IR, absorbance, reflectance, and photoluminescence spectra

W. BAŁA1,2, M. WOJDYŁA1, M. RĘBARZ1, M. SZYBOWIC3,* , M. DROZDOWSKI3, A. GRODZICKI4, P. PISZCZEK4

Affiliation

  1. Institute of Physics, N. Copernicus University, Grudziądzka 5/7, 87-100 Toruń, Poland
  2. Institute of Physics, Kazimierz Wielki University, Weyssenhoff Sq.11, 85-072 Bydgoszcz, Poland
  3. Faculty of Technical Physics, Poznan University of Technology, Nieszawska 13 A , 60-965 Poznań, Poland
  4. Faculty of Chemistry, N. Copernicus University, Gagarina 7, 87-100 Toruń, Poland

Abstract

In this paper we present the comparative study of photoluminescence (PL), absorption (A), FT-IR, Raman scattering (RS) and reflection (R) spectra of metallophthalocyanines (MPc; M = Zn, Co, Mg, Cu) thin layers. Investigated thin films were deposited by the quasi molecular beam evaporation method on the quartz and silicon substrates. The measurements were carried out in the 350-1150 nm spectral region at wide temperature range from 13K to 320K (PL) and 70K to 550K (FT-IR, RS). The thin films of ZnPc and MgPc show PL emission from the violet to near-IR region whereas CoPc and CuPc layers do not show measurable emission. The temperature dependence of MPc photoluminescence spectra measured in such a wide spectral range are presented for the first time. The obtained emission spectra exhibit several transitions but some of them are visible only at certain temperature range. The changes of both, bands intensities and band positions versus temperature have been studied. Similar investigations have been performed for the FT-IR and Raman scattering spectra. Integral intensities and band position of Raman and FT-IR modes in MPc thin layers indicate sharp kinks at 180 K and 380 K. The obtained transmission and reflection spectra of all investigated thin layers have been also compared with mentioned above results..

Keywords

Thin films, Metallophthalocyanines, Photoluminescence, Absorption, Reflection, FT-IR, Raman scattering spectra.

Submitted at: Oct. 20, 2008
Accepted at: March 24, 2009

Citation

W. BAŁA, M. WOJDYŁA, M. RĘBARZ, M. SZYBOWIC, M. DROZDOWSKI, A. GRODZICKI, P. PISZCZEK, Influence of central metal atom in MPc (M = Cu, Zn, Mg, Co) on Raman, FT-IR, absorbance, reflectance, and photoluminescence spectra, Journal of Optoelectronics and Advanced Materials Vol. 11, Iss. 3, pp. 264-269 (2009)