首页|Modeling the performance of perovskite solar cells with inserting porous insulating alumina nanoplates
Modeling the performance of perovskite solar cells with inserting porous insulating alumina nanoplates
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Peng et al.[Science 379 683(2023)]reported an effective method to improve the performance of perovskite solar cells by using thicker porous insulator contact(PIC)-alumina nanoplates.This method overcomes the trade-off between the open-circuit voltage and the fill factor through two mechanisms:reduced surface recombination velocity and increased bulk recombination lifetime due to better perovskite crystallinity.From arguments of drift-diffusion simulations,we find that an increase in mobility and carrier recombination lifetime in bulk are the key factors for minimizing the resistance-effect from thicker PICs and achieving a maximum power conversion efficiency(PCE)at approximately 25％reduced contact area.Furthermore,the partially replacement of perovskite films with thicker PICs would result in a reduction in short-current density,but the relative low refractive index of the PICs imbedded into the high refractive index perovskite creates light trapping structures that compensate for this loss.
perovskite solar cellsnanostructurecrystallinemobility
潘赵耀、杨金彭、沈小双
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College of Physical Science and Technology,Yangzhou University,Yangzhou 225009,China
Qing-Lan Project from Yangzhou University and the National Natural Science Foundation of China
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