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Multifunctional coatings and encapsulations for improved light management and durability in perovskite solar cells

Thesis defender: Maryam Mousavi 
Opponent: Associate Prof. Jovana Milic, University of Turku
Custos: Associate Prof.  Jaana Vapaavuori., Aalto University School of Chemical Engineering

Multifunctional coatings and encapsulations for improved light management and durability in perovskite solar cells
 

Rising global electricity demand and the need for sustainable energy solutions have intensified the shift toward renewable energy, with solar energy playing a central role. Among photovoltaic technologies, perovskite solar cells (PSCs) are highly promising due to their high efficiency and potential for low-cost, scalable fabrication. However, optical losses and long-term stability remain major challenges limiting their practical deployment.
This doctoral thesis addresses these challenges through bio-inspired and multifunctional design strategies. Nature-inspired light management layers, replicated from the micro–nano surface morphology of leek leaves, were developed to enhance light harvesting, improve device efficiency, and introduce self-cleaning functionality. An optically transparent bio-based composite further improved performance by extending the optical path while providing thermal regulation and UV shielding to enhance stability. Additionally, an in-situ encapsulation and patterning approach was introduced, simultaneously improving light management and protecting PSCs from environmental degradation, resulting in enhanced efficiency and long-term stability.
Overall, this work presents an integrated strategy combining bio-inspired surfaces, multifunctional coatings, and in-situ encapsulation to overcome key optical and stability limitations of PSCs, contributing to their advancement toward reliable and sustainable commercialization.
 

Perovskite solar cells, performance, stability, optical properties, light management layers, light managing encapsulation

Thesis available for public display 7 days prior to the defence at .

Contact information: maryam.mousavi@aalto.fi