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Raman enhancement induced by exciton hybridization in molecules and 2D materials

Chemistry

Raman enhancement induced by exciton hybridization in molecules and 2D materials

H. Kitadai, Q. Tan, et al.

Discover groundbreaking research by Hikari Kitadai, Qishuo Tan, Lu Ping, and Xi Ling on the strong coupling mechanism between target molecules and 2D materials as SERS substrates, enhancing the detectability of vibrational modes down to 10⁻¹³ M. This study reveals the essential role of exciton hybridization in Raman enhancement—paving the way for ultra-sensitive SERS substrate design!

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Playback language: English
Abstract
This research investigates the coupling mechanism between target molecules and 2D materials as SERS substrates. Strong coupling between SnS₂ and rhodamine 6G (Rh 6G) is observed due to their degenerate excitons, leading to enhanced Rh 6G vibrational modes detectable down to 10⁻¹³ M. Excitation-dependent Raman spectroscopy reveals exciton hybridization plays a vital role in Raman enhancement, opening avenues for designing high-sensitivity SERS substrates.
Publisher
npj 2D Materials and Applications
Published On
Feb 14, 2024
Authors
Hikari Kitadai, Qishuo Tan, Lu Ping, Xi Ling
Tags
SERS
2D materials
strong coupling
rhodamine 6G
Raman enhancement
exciton hybridization
vibrational modes

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