Presentation Information
[10p-S5-14]Interface Passivation with several molecules for Improving Performance and stability of Perovskite Solar Cells
〇Tingli Ma1, Jiazhe Sun1 (1.Kyutech Univ)
Keywords:
perovskite solar cell,interface passivation,improve performance and stability
Perovskite solar cells (PSCs) have attracted significant attention because of their high power conversion efficiency. However, their long-term stability remains a major challenge. Our group focuses on fundamental studies of PSCs, including the development of materials and interface passivation strategies.
We developed simple interface passivation processes using various organic and inorganic molecules. In particular, we successfully fabricated seamless carbon electrodes for low-cost PSCs through hot-pressing and solution-based passivation methods. The resulting carbon-electrode PSCs exhibited excellent PCEs and significantly improved stability compared with conventional devices.
We also employed an interface engineering strategy using Cs2PtI6 and 4-nitrophenyl phosphate (PNNP) as passivation molecules to improve the NiOx/perovskite interface. This approach enhanced the surface uniformity and hydrophilicity of the NiOx/Me-4PACz layer and promoted favorable crystal growth and orientation of the perovskite film. Furthermore, PNNP effectively suppressed defect formation at both the NiOx surface and the underlying perovskite layer, leading to significantly improved interfacial charge-transfer efficiency. As a result, the efficiency of flexible PSCs (F-PSCs) increased from 21.46% to 23.66%.
We developed simple interface passivation processes using various organic and inorganic molecules. In particular, we successfully fabricated seamless carbon electrodes for low-cost PSCs through hot-pressing and solution-based passivation methods. The resulting carbon-electrode PSCs exhibited excellent PCEs and significantly improved stability compared with conventional devices.
We also employed an interface engineering strategy using Cs2PtI6 and 4-nitrophenyl phosphate (PNNP) as passivation molecules to improve the NiOx/perovskite interface. This approach enhanced the surface uniformity and hydrophilicity of the NiOx/Me-4PACz layer and promoted favorable crystal growth and orientation of the perovskite film. Furthermore, PNNP effectively suppressed defect formation at both the NiOx surface and the underlying perovskite layer, leading to significantly improved interfacial charge-transfer efficiency. As a result, the efficiency of flexible PSCs (F-PSCs) increased from 21.46% to 23.66%.