Efficiency Improvement of MAPbI 3 Perovskite Solar Cells Based on a CsPbBr 3 Quantum Dot/Au Nanoparticle Composite Plasmonic Light-Harvesting Layer

We demonstrate a method to enhance the power conversion efficiency (PCE) of MAPbI₃ perovskite solar cells through localized surface plasmon (LSP) coupling with gold nanoparticles:CsPbBr₃ hybrid perovskite quantum dots (AuNPs:QD-CsPbBr₃). The plasmonic AuNPs:QD-CsPbBr₃ possess the features of high light-harvesting capacity and fast charge transfer through the LSP resonance effect, thus improving the short-circuit current density and the fill factor. Compared to the original device without Au NPs, a 27.8% enhancement in PCE of plasmonic AuNPs:QD-CsPbBr₃/MAPbI₃ perovskite solar cells was achieved upon 120 μL Au NP solution doping. This improvement can be attributed to the formation of surface plasmon resonance and light scattering effects in Au NPs embedded in QD-CsPbBr₃, resulting in improved light absorption due to plasmonic nanoparticles.

Abstract licence: CC BY

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   The optoelectronic role of chlorine in CH3NH3PbI3(Cl)-based perovskite solar cells · 2015

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