This paper evaluates the potential of using Al64Cu25Fe11 alloy to improve the solar absorption of dye-sensitized solar cells by replacing the mesoporous layer material. The alloy is created using high-energy ball milling, a mechanical alloying method that provides intense mixing of elements at the atomic level. Subsequent heat treatment promotes the formation and growth of the icosahedral phase, which has unique microstructure and optical properties.
Al–Cu–Fe compounds are of interest in the context of improving solar energy absorption due to their unique optical and thermal properties. Research shows that varying the ratio of Al, Cu and Fe allows tuning the spectral characteristics of the material for optimal absorption in the solar range.
These characteristics, together with the electrical conductivity of the Al–Cu–Fe alloy, are compared with those of titanium dioxide, a widely used mesoporous material in solar cells, in order to find an alternative to the scarce and expensive titanium dioxide. To substantiate this goal, a comprehensive analysis of the microstructure, thermal properties, electrical parameters, and optical characteristics of the mechanically alloyed alloy is presented.
One of the promising areas is the creation of selective absorbing coatings based on Al–Cu–Fe. Such coatings demonstrate high absorption in the visible and near infrared spectral regions, while minimizing thermal radiation in the infrared range. This allows for the efficient conversion of solar energy into thermal energy, reducing radiation losses.
To optimize the performance of Al–Cu–Fe coatings, it is necessary to consider the influence of morphology, crystal structure and chemical composition. Further research is focused on the development of application methods that ensure high homogeneity and adhesion of coatings to various substrates.
Author: Abdul Hai Alami, Afra Alketbi, Jehad Ebed, Mira Almheiri
Institute: Sustainable and Renewable Energy Engineering Department, University of Sharjah, Sharjah, United Arab Emirates