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Vol. 25 No. 4 (2013): Vol 25 Issue 4

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Effect of Thermal Annealing on the Optical and Photoluminescence Properties of H2PcOC8 Thin Films

https://doi.org/10.14233/ajchem.2013.13229
Vinu T. Vadakel
School of Pure and Applied Physics, Mahatma Gandhi University, Priyadarshini Hills, P.O, Kottayam-686 560, India
C.S. Menon
School of Pure and Applied Physics, Mahatma Gandhi University, Priyadarshini Hills, P.O, Kottayam-686 560, India

Corresponding Author(s) : Vinu T. Vadakel

vinutvadakel@gmail.com

Asian Journal of Chemistry, Vol. 25 No. 4 (2013): Vol 25 Issue 4

Abstract

2,3,9,10,16,17,23,24-Octakis(octyloxy)phthalocyanine (H2PcOC8), C96H146N8O8, is a plane organic molecule having numerous optical and electrical applications in organic electronics. This work investigates the influence of the annealing temperature on optical band gap, optical constants and photoluminescence spectrum of the H2PcOC8 films. The optical transition was found to be direct allowed. The band gap energy reduced on annealing from its as deposited value. As the annealing temperature increases, the intensity of the absorption peak also increases. Variation of optical parameters with annealing temperature was also investigated. The effect of thermal annealing on the films were studied by recording the photoluminescence spectra. The intensity of photoluminescence and the profile of the photoluminescence spectra were depend on the temperature of the post deposition annealing of the thin films. The morphology of the thin films is expected to influence the photoluminescence behaviour of the H2PcOC8 thin films.

Keywords

Octakis octyloxy phthalocyanine Absorption spectra Band gap energy Optical parameters Photoluminescence spectrum
T. Vadakel, V., & Menon, C. (2012). Effect of Thermal Annealing on the Optical and Photoluminescence Properties of H2PcOC8 Thin Films. Asian Journal of Chemistry, 25(4), 1909–1912. https://doi.org/10.14233/ajchem.2013.13229
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