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All Journal Journal of Applied Materials and Technology
Mariana Araújo
Instituto de Pesquisas Energéticas e Nucleares – IPEN/CNEN, 05508-000 São Paulo – SP, Brasil
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Engineering Mechanical Engineering

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Quantum accessory for solar panels: a sustainable solution to improve energy efficiency based on the circular economy Camila Grossmann Sastre; Juliana de Carvalho Izidoro; Wayner de Souza klën; Mariana Araújo; Danilo L. Costa-Silva
Journal of Applied Materials and Technology Vol. 7 No. 2 (2026): March 2026
Publisher : Faculty of Engineering Universitas Riau and Applied Materials and Technology Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/Jamt.7.2.85-93

Abstract

Carbon quantum dots (CQDs) have emerged as promising spectral modifiers for photovoltaic devices due to their photoluminescent down-conversion properties. In parallel, silica-rich industrial residues represent an environmental liability but also a potential source of functional materials. This study investigated the valorization of SiO2-rich mining residue for the production of a sodium silicate matrix incorporating CQDs as a spectral conversion overlayer for solar panels. The treated residue successfully yielded sodium silicate, and CQDs were synthesized and integrated into the matrix. Photovoltaic testing demonstrated that panels coated with industrial-derived sodium silicate exhibited an initial efficiency increase of 8.91% compared to standard panels. However, coatings containing CQDs with the residue-derived sodium silicate showed reduced performance in early-stage testing, and all samples exhibited progressive opacity after six months, indicating limited long-term stability. These findings highlight both the potential and the challenges of integrating CQD-based spectral management with mining residue valorization. While the approach demonstrates feasibility in short-term performance enhancement, material stability remains a critical barrier for practical implementation.
Co-Authors Camila Grossmann Sastre Danilo L. Costa-Silva Juliana de Carvalho Izidoro Wayner de Souza klën