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Article Dans Une Revue Applied Surface Science Année : 2016

Flexible heterostructures based on metal phthalocyanines thin films obtained by MAPLE

Marcela Socol
  • Fonction : Auteur
N. Preda
  • Fonction : Auteur
Oana Rasoga
  • Fonction : Auteur
C. Breazu
  • Fonction : Auteur
I. Stavarache
  • Fonction : Auteur
Florin Stanculescu
  • Fonction : Auteur
G. Socol
  • Fonction : Auteur
F. Gherendi
  • Fonction : Auteur
V. Grumezescu
  • Fonction : Auteur
G. Popescu-Pelin
  • Fonction : Auteur
Mihaela Girtan
N. Stefan
  • Fonction : Auteur

Résumé

Heterostructures based on zinc phthalocyanine (ZnPc), magnesium phthalocyanine (MgPc) and 5,10,15,20-tetra(4-pyrydil)21H,23H-porphine (TPyP) were deposited on ITO flexible substrates by Matrix Assisted Pulsed Laser Evaporation (MAPLE) technique. Organic heterostructures containing (TPyP/ZnPc(MgPc)) stacked or (ZnPc(MgPc):TPyP) mixed layers were characterized by X-ray diffraction-XRD, photoluminescence-PL, UV–vis and FTIR spectroscopy. No chemical decomposition of the initial materials was observed. The investigated structures present a large spectral absorption in the visible range making them suitable for organic photovoltaics applications (OPV). Scanning electron microscopy-SEM and atomic force microscopy-AFM revealed morphologies typical for the films prepared by MAPLE. The current–voltage characteristics of the investigated structures, measured in dark and under light, present an improvement in the current value (∼3 order of magnitude larger) for the structure based on the mixed layer (Al/MgPc:TPyP/ITO) in comparison with the stacked layer (Al/MgPc//TPyP/ITO). A photogeneration process was evidenced in the case of structures Al/ZnPc:TPyP/ITO with mixed layers.

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Dates et versions

hal-01392020 , version 1 (04-11-2016)

Identifiants

Citer

Marcela Socol, N. Preda, Oana Rasoga, C. Breazu, I. Stavarache, et al.. Flexible heterostructures based on metal phthalocyanines thin films obtained by MAPLE. Applied Surface Science, 2016, 374, pp.403-410. ⟨10.1016/j.apsusc.2015.10.166⟩. ⟨hal-01392020⟩

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