Publication date: 17th February 2025
In this work, perovskite solar cell structures were prepared on glass/ITO substrates, to which a laser-patterning process was applied to engineer the surface morphology. To explore the micro-concentrator photovoltaic architecture using perovskite light absorbers, we compared the optical and electrical behaviours of un-patterned and laser-patterned samples. The power conversion efficiency (PCE) of un-patterned perovskite solar cells was about 16%, consistent with the typical efficiency of planar structures. However, COMSOL Multiphysics simulations show that the laser-patterned structures have the potential to significantly enhance light absorption and carrier collection, when coupled to arrays of microlenses, thereby increasing the PCE.
Periodic microstructures produced by the laser-patterning process offer a base to integrate microlenses on the surface of the device for localized light concentration, hence reducing optical losses and enhancing the utilization of photons. With enhanced light management, the intrinsic characteristics of the perovskite material enable the development of a highly efficient and low-cost photovoltaic device.
We will present a scalable pathway toward efficient solar energy conversion, leveraging the advantages of laser-patterned perovskites and microlens integration. Further efforts will be made to experimentally validate the efficiency improvements predicted and to optimize the lens-perovskite interface to ensure the best performance.
SHERPA has received funding from the MSCA European Postdoctoral fellowships programme under grant agreement No. 101065298.
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