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  • 1 ‘Dunărea de Jos’ University of Galati Department of Metals and Materials Science 111 Domneasca 800201 Galati Romania
  • | 2 INCDIE-ICPE-CA-National Institute for Research and Development in Electrical Engineering 313 Splaiul Unirii 030138 Bucharest Romania
  • | 3 New University of Lisbon Department of Materials Science, CENIMAT, Faculty of Sciences and Technology Quinta da Torre 2829-516 Caparica Portugal
  • | 4 University of Bucharest Department of Physical Chemistry 4-12 Bd. Elisabeta 7034 Bucharest Romania
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Abstract  

The isoconversional methods (Friedman (FR), Flynn-Wall-Ozawa (FWO) and Kissinger-Akahira-Sunose (KAS)) were applied for evaluating the dependencies of the activation energy (E) on the mass loss (Δm) corresponding to the non-isothermal decomposition of two Zn acetate-based gel precursors for ZnO thin films whose preparation differs by the drying temperature of the liquid sol-precursor (125°C for sample A, and 150°C for sample B). Although both investigated samples exhibit similar decomposition steps, strong differences between E vs. Δm curves as well as among the characteristic parameters of the decomposition steps, directly evaluated from TG, DTG and DTA curves, were put in evidence.

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