Passivation Layer Thickness-Dependent Effects on Light Irradiation in Two-Dimensional Ruddlesden-Popper Perovskites

초록

Two-dimensional Ruddlesden−Popper lead halide perovskites (2D-RPPs) are promising materials for solar cells and photovoltaic devices and their device stability is significantly improved compared to three-dimensional perovskites due to increased hydrophobicity and suppressed ion transport. However, 2D-RPPs are also known to be susceptible to moisture and light, which leads to rapid degradation and thus limits their direct applications. Recent research has focused on blocking degradation factors using insulating layers such as poly(methyl methacrylate) or hexagonal boron nitride (hBN). However, most studies have concentrated on blocking the effects of oxygen and moisture and examining their effects. In this study, we performed passivation with hBN flakes and placed silica gel in a vacuum desiccator to minimize the effects of oxygen and moisture. We then analyzed the differences in the effects on illumination depending on the hBN thickness. © 2026, Korean Vacuum Society. All rights reserved.

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