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Micromorphology investigation of GaAs solar cells: case study on statistical surface roughness parameters

  • Ştefan Ţălu
  • Papež Nikola
  • Dinara Sobola
  • Amine Achour
  • Shahram Solaymani
Article

Abstract

The purpose of this work is surface characterization of GaAs solar cell using atomic force microscopy. The surface appearance influences the optical properties of the cells. It impacts light trapping and consequently affect the efficiency of the solar cells. In case of nano-structural surface, the properties are strongly depends on its geometrical characteristics. Surface appearance was studied by atomic force microscopy (AFM). Fractal analysis was done by the triangulation method and evaluation of statistical metrics was carrying out on the basis of AFM-data, before and after heating. The results of fractal analysis show the correlation of fractal dimension and statistical characteristics of surface topography. Characterization technique and data processing methodology are essential for description of the surface condition.

Notes

Acknowledgements

Research described in the paper was financially supported by Internal Grant Agency of Brno University of Technology, grant No. FEKT-S-17-4626, by project Sensor, Information and Communication Systems SIX CZ.1.05/2.1.00/03.0072 and by the Grant Agency of the Czech Republic under no. GACR 15-05259S.

Complaince with ethical standards

Conflict of interest

The authors claim to have no financial interest, either directly or indirectly, in the products or information listed in the article. The authors alone are responsible for the content and writing of the paper.

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Copyright information

© Springer Science+Business Media, LLC 2017

Authors and Affiliations

  1. 1.Faculty of Mechanical Engineering, Department of AET, Discipline of Descriptive Geometry and Engineering GraphicsTechnical University of Cluj-NapocaCluj-NapocaRomania
  2. 2.Faculty of Electrical Engineering and Communication, Physics DepartmentBrno University of TechnologyBrnoCzech Republic
  3. 3.National Institute of Scientific ResearchVarennesCanada
  4. 4.Department of Physics, Science and Research BranchIslamic Azad UniversityTehranIran

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