This work is dedicated to the description of the degradation of GaAs solar cells under continuous laser irradiation. Constant and strong exposure of the solar cell was performed over two months. Time-dependent electrical characteristics are presented. The structure of the solar cells was studied at the first and last stages of degradation test. The data from Raman spectroscopy, reflectometry, and secondary ion mass spectrometry confirm displacement of titanium and aluminum atoms. X-ray photoelectron spectroscopy showed a slight redistribution of oxygen bonds in the anti-corrosion coating.

CEITEC BUT Brno University of Technology Purkyňova 656 123 61200 Brno Czech Republic

Department of Inorganic Chemistry and Chemical Ecology Dagestan State University Makhachkala St M Gadjieva 43 a 367015 Dagestan Republic Russia

Department of Physics Faculty of Electrical Engineering and Communication Brno University of Technology Technická 2848 8 61600 Brno Czech Republic

Department of Solid State Physics and Surfaces Faculty of Mechanical Engineering Brno University of Technology Technická 2896 2 61600 Brno Czech Republic

Directorate of Research Development and Innovation Management Technical University of Cluj Napoca Constantin Daicoviciu Street no 15 Cluj Napoca 400020 Cluj County Romania

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Structure Tuning and Electrical Properties of Mixed PVDF and Nylon Nanofibers

Overview of the Current State of Gallium Arsenide-Based Solar Cells