Sum-frequency generation spectroscopy in the mid-infrared: K-doped C60/Ag(111) interface

André Peremans; Yves Caudano; Paul Dumas; Wan Quan Zheng; Alain Le Rille; Paul Thiry; Abderrahmane Tadjeddine

doi:10.1117/12.307139

Sum-frequency generation spectroscopy in the mid-infrared: K-doped C60/Ag(111) interface

André Peremans, Yves Caudano, Paul Dumas, Wan Quan Zheng, Alain Le Rille, Paul Thiry, Abderrahmane Tadjeddine

Namur Research Institute for Life Sciences

Résultats de recherche: Contribution à un journal/une revue › Article

Résumé

We have developed a Sum-Frequency Generation (SFG) spectrometer allowing sensitive and highly resolved (1.8 cm-1) vibrational spectroscopy in the mid-infrared (2-10 µm) using a dedicated picosecond optical parametric oscillator. Combining SFG and infrared absorption-reflection spectroscopy, we pinpoint the occurrence of dynamical charge transfer at the C60/Ag(111) interface. The induced strong infrared activation of the C60 Ag(2) mode (~1440 cm-1) and its softening are quenched upon K-doping. This allows us to infer the coupling strength of the Ag(2) vibration to the t1u orbital of C60.

langue originale	Anglais
Pages (de - à)	35-41
Nombre de pages	7
journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	3272
Les DOIs	https://doi.org/10.1117/12.307139
Etat de la publication	Publié - 1998

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title = "Sum-frequency generation spectroscopy in the mid-infrared: K-doped C60/Ag(111) interface",

abstract = "We have developed a Sum-Frequency Generation (SFG) spectrometer allowing sensitive and highly resolved (1.8 cm-1) vibrational spectroscopy in the mid-infrared (2-10 µm) using a dedicated picosecond optical parametric oscillator. Combining SFG and infrared absorption-reflection spectroscopy, we pinpoint the occurrence of dynamical charge transfer at the C60/Ag(111) interface. The induced strong infrared activation of the C60 Ag(2) mode (~1440 cm-1) and its softening are quenched upon K-doping. This allows us to infer the coupling strength of the Ag(2) vibration to the t1u orbital of C60.",

author = "Andr{\'e} Peremans and Yves Caudano and Paul Dumas and Zheng, {Wan Quan} and {Le Rille}, Alain and Paul Thiry and Abderrahmane Tadjeddine",

year = "1998",

doi = "10.1117/12.307139",

language = "English",

volume = "3272",

pages = "35--41",

journal = "Proceedings of SPIE - The International Society for Optical Engineering",

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TY - JOUR

T1 - Sum-frequency generation spectroscopy in the mid-infrared

T2 - K-doped C60/Ag(111) interface

AU - Peremans, André

AU - Caudano, Yves

AU - Dumas, Paul

AU - Zheng, Wan Quan

AU - Le Rille, Alain

AU - Thiry, Paul

AU - Tadjeddine, Abderrahmane

PY - 1998

Y1 - 1998

N2 - We have developed a Sum-Frequency Generation (SFG) spectrometer allowing sensitive and highly resolved (1.8 cm-1) vibrational spectroscopy in the mid-infrared (2-10 µm) using a dedicated picosecond optical parametric oscillator. Combining SFG and infrared absorption-reflection spectroscopy, we pinpoint the occurrence of dynamical charge transfer at the C60/Ag(111) interface. The induced strong infrared activation of the C60 Ag(2) mode (~1440 cm-1) and its softening are quenched upon K-doping. This allows us to infer the coupling strength of the Ag(2) vibration to the t1u orbital of C60.

AB - We have developed a Sum-Frequency Generation (SFG) spectrometer allowing sensitive and highly resolved (1.8 cm-1) vibrational spectroscopy in the mid-infrared (2-10 µm) using a dedicated picosecond optical parametric oscillator. Combining SFG and infrared absorption-reflection spectroscopy, we pinpoint the occurrence of dynamical charge transfer at the C60/Ag(111) interface. The induced strong infrared activation of the C60 Ag(2) mode (~1440 cm-1) and its softening are quenched upon K-doping. This allows us to infer the coupling strength of the Ag(2) vibration to the t1u orbital of C60.

U2 - 10.1117/12.307139

DO - 10.1117/12.307139

M3 - Article

SN - 0277-786X

VL - 3272

SP - 35

EP - 41

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

ER -

Sum-frequency generation spectroscopy in the mid-infrared: K-doped C60/Ag(111) interface

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