[18a-M_123-1~13] 12.2 Characterization and Materials Physics

11:00 AM - 11:15 AM JST(2:00 AM - 2:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[18a-M_123-8] Examination of Molecular Behavior at Epoxy/Silver Joint Interfaces via SFG Simulation

〇(M1)KOTARO KATSUMORI¹, Misaki Ikeda¹, Takayuki Miyamae¹, Masaya Ukita², Keisuke Wakamoto² (1.Chiba Univ., 2.Rohm R&D Center)

Keywords:

Adhesion,Interface chemistry,Sum-frequency generation spectroscopy

Delamination at the epoxy/silver bonding interface after thermal reliability testing is a critical issue in power-conversion packages. In this study, we simulate SFG spectra of an epoxy/silver-oxide/silver multilayer using a thin-film interference model, and reproduce the peak inversion and intensity changes observed after long-term annealing at 150 °C by varying the silver-oxide thickness. This approach enables nondestructive estimation of molecular orientation at the buried interface and the growth of the oxide layer.