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Laser desorption from the surface of copper phthalocyanine films on silicon and cadmium sulfide

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Abstract

We have studied laser desorption mass spectra of copper phthalocyanine (CuPc) films deposited in vacuum onto single crystal silicon and cadmium sulfide substrates. The desorption was induced by 10-ns pulses of neodymium laser radiation (quantum energy, 2.34 eV) with an energy density E varied from 0.1 to 40 mJ/cm2. It is established that laser radiation produces fragmentation of CuPc molecules and desorption of the fragments. The main fragments observed in the mass spectra are identified. The intensity of the main desorbed species has been studied as a function of the laser pulse energy density. The components of CdS substrates penetrate into the volume of deposited CuPc films in the form of Cd atoms and S2 molecules.

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Authors and Affiliations

  1. Fock Institute of Physics, St. Petersburg State University, St. Petersburg, 198504, Russia

    É. F. Lazneva

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  1. É. F. Lazneva
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Correspondence to É. F. Lazneva.

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Original Russian Text © É.F. Lazneva, 2007, published in Pis’ma v Zhurnal Tekhnicheskoĭ Fiziki, 2007, Vol. 33, No. 21, pp. 63–71.

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Lazneva, É.F. Laser desorption from the surface of copper phthalocyanine films on silicon and cadmium sulfide. Tech. Phys. Lett. 33, 926–929 (2007). https://doi.org/10.1134/S1063785007110107

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  • DOI: https://doi.org/10.1134/S1063785007110107

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