Effect of Optical Absorption Layer Thickness on Photovoltaic Performance of Carbon Electrode Perovskite Solar Cells

Abstract

Abstract: In this paper, organic-inorganic hybrid perovskite (MAPbI₃) optical absorption layer thin film with different thickness was prepared by controlling the concentration of PbI₂(DMSO) solution by two-step method, and a large area perovskite solar cell based on carbon electrode hole-free transport layer was assembled. The crystal phase, optical absorption properties, surface morphology and elemental composition of MAPbI₃ optical absorption layer films with different thickness were analyzed, and the photovoltaic performance of perovskite solar cells prepared based on MAPbI₃ film were further tested. The results show that the thickness of MAPbI₃ photoabsorption layer is positively correlated with the concentration of PbI₂(DMSO). The thickness of MAPbI₃ optical absorption layer prepared by 1.3 mol/L PbI₂ solution is about 350 nm, which has good crystallinity and optical absorption intensity, and the surface of the film is compact and smooth without obvious defects. Finally, the perovskite solar cell based on 350 nm MAPbI₃ optical absorption layer achieves 8.48% photoelectric conversion efficiency.

Key words: carbon electrode, perovskite, solar cell, hole-free transport layer, optical absorption layer, photovolatic performance

CLC Number:

TM914.4
TB34

CHU Shuyong, ZHANG Zhengguo, LIU Hai. Effect of Optical Absorption Layer Thickness on Photovoltaic Performance of Carbon Electrode Perovskite Solar Cells[J]. Journal of Synthetic Crystals, 2022, 51(11): 1936-1943.

References

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