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Nonlinear Spectro-Electrochemistry Group
Research
Our group utilizes advanced spectroscopy, primarily vibrational sum frequency generation (SFG), to investigate fundamental processes, including charge transfer across electrochemical interfaces. We study solvent and ion adsorption on single-crystal electrodes, reaction intermediates for key electrochemical reactions (e.g., ORR, HER, organic molecule oxidation), and charge carrier dynamics during heterogeneous charge transfer. Additionally, we explore the solvation and desolvation of anions at interfaces relevant to next-generation batteries.
News & Events
Latest Publications
Isolating Optical Responses in MoS₂/Au Junctions
This study explores the optical behavior of MoS₂ monolayers in contact with Au. Using polarization-controlled final-state sum frequency generation (FS-SFG), we isolated the monolayer’s response, revealing a linear spectral lineshape that reflects the constant density of states at the band edge, free from excitonic effects. Our findings highlight a significant bandgap renormalization to ~1.65 ± 0.20 eV, offering valuable insights for 2D semiconductor-based optoelectronics and photocatalysis.