[20a-C302-1~11] 12.5 有機・ハイブリッド太陽電池

10:00 〜 10:15英語発表

[20a-C302-5] Rapid Densification of Polysilazane Coated Films Achieving Record-High Moisture Barrier Performance Using High-Power VUV Irradiation

〇He Sun¹, Luyang Song¹, Yoshiyuki Suzuri¹ (1.Yamagata Univ.)

キーワード：

moisture barrier、VUV irradiation、PHPS densification

The commercial viability of organic electronics highly depends on achieving long lifetimes. The instability of organic materials in the presence of oxygen and water vapor is a significant challenge. This study enhances the moisture barrier properties of PHPS-coated films using VUV irradiation. We examine the effects of VUV light intensities (103 to 309 mW/cm²) on film densification and WVTR performance. At 103 mW/cm², films showed moderate densification and reduced WVTR, indicating some improvement. At 309 mW/cm², films achieved rapid and significant densification, with record-low WVTR values of 1.6x10^-5 g/m²/day in 19.4 s per layer and 3.8x10^-5 g/m²/day in 9.7 s. This rapid densification is due to accelerated Si-N bond formation, reducing free volume and increasing density. Optimizing VUV irradiation intensity is key for high-performance barrier films. This study enables efficient large-scale production of superior barrier films, essential for perovskite solar cells.