Ultrafast interfacial charge separation processes from the singlet and triplet MLCT states of Ru(bpy)2(dcbpy) adsorbed on nanocrystalline SnO2 under negative applied bias

Shinichiro Iwai; Kohjiro Hara; Shigeo Murata; Ryuzi Katoh; Hideki Sugihara; Hironori Arakawa

doi:10.1063/1.1287063

Ultrafast interfacial charge separation processes from the singlet and triplet MLCT states of Ru(bpy)₂(dcbpy) adsorbed on nanocrystalline SnO₂ under negative applied bias

Shinichiro Iwai, Kohjiro Hara, Shigeo Murata, Ryuzi Katoh, Hideki Sugihara, Hironori Arakawa

SCI - Physics

National Institute of Advanced Industrial Science and Technology

Research output: Contribution to journal › Article › peer-review

58 Citations (Scopus)

Abstract

The authors made a femtosecond pump-probe measurement for SnO₂ nanocrystals sensitized by Ru(bpy)₂(dcbpy) with a time resolution of 70 fs under applied biases. The stimulated emission decay for the ¹MLCT state has been found for the first time in this system. The decay time changes from 70 fs to 320 fs by changing the bias from 0 to -0.7 V. By analyzing the dependence of the stimulated emission decay and the luminescence decay on the applied bias, the interfacial CS from the singlet (¹MLCT) and triplet (³MLCT) excited states of Ru(bpy)₂(dcbpy) is discussed.

Original language	English
Pages (from-to)	3366-3373
Number of pages	8
Journal	Journal of Chemical Physics
Volume	113
Issue number	8
DOIs	https://doi.org/10.1063/1.1287063
Publication status	Published - 2000 Aug 22

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title = "Ultrafast interfacial charge separation processes from the singlet and triplet MLCT states of Ru(bpy)2(dcbpy) adsorbed on nanocrystalline SnO2 under negative applied bias",

abstract = "The authors made a femtosecond pump-probe measurement for SnO2 nanocrystals sensitized by Ru(bpy)2(dcbpy) with a time resolution of 70 fs under applied biases. The stimulated emission decay for the 1MLCT state has been found for the first time in this system. The decay time changes from 70 fs to 320 fs by changing the bias from 0 to -0.7 V. By analyzing the dependence of the stimulated emission decay and the luminescence decay on the applied bias, the interfacial CS from the singlet (1MLCT) and triplet (3MLCT) excited states of Ru(bpy)2(dcbpy) is discussed.",

author = "Shinichiro Iwai and Kohjiro Hara and Shigeo Murata and Ryuzi Katoh and Hideki Sugihara and Hironori Arakawa",

year = "2000",

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doi = "10.1063/1.1287063",

language = "English",

volume = "113",

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journal = "Journal of Chemical Physics",

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Ultrafast interfacial charge separation processes from the singlet and triplet MLCT states of Ru(bpy)₂(dcbpy) adsorbed on nanocrystalline SnO₂ under negative applied bias. / Iwai, Shinichiro; Hara, Kohjiro; Murata, Shigeo et al.
In: Journal of Chemical Physics, Vol. 113, No. 8, 22.08.2000, p. 3366-3373.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Ultrafast interfacial charge separation processes from the singlet and triplet MLCT states of Ru(bpy)2(dcbpy) adsorbed on nanocrystalline SnO2 under negative applied bias

AU - Iwai, Shinichiro

AU - Hara, Kohjiro

AU - Murata, Shigeo

AU - Katoh, Ryuzi

AU - Sugihara, Hideki

AU - Arakawa, Hironori

PY - 2000/8/22

Y1 - 2000/8/22

N2 - The authors made a femtosecond pump-probe measurement for SnO2 nanocrystals sensitized by Ru(bpy)2(dcbpy) with a time resolution of 70 fs under applied biases. The stimulated emission decay for the 1MLCT state has been found for the first time in this system. The decay time changes from 70 fs to 320 fs by changing the bias from 0 to -0.7 V. By analyzing the dependence of the stimulated emission decay and the luminescence decay on the applied bias, the interfacial CS from the singlet (1MLCT) and triplet (3MLCT) excited states of Ru(bpy)2(dcbpy) is discussed.

AB - The authors made a femtosecond pump-probe measurement for SnO2 nanocrystals sensitized by Ru(bpy)2(dcbpy) with a time resolution of 70 fs under applied biases. The stimulated emission decay for the 1MLCT state has been found for the first time in this system. The decay time changes from 70 fs to 320 fs by changing the bias from 0 to -0.7 V. By analyzing the dependence of the stimulated emission decay and the luminescence decay on the applied bias, the interfacial CS from the singlet (1MLCT) and triplet (3MLCT) excited states of Ru(bpy)2(dcbpy) is discussed.

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DO - 10.1063/1.1287063

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JF - Journal of Chemical Physics

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Ultrafast interfacial charge separation processes from the singlet and triplet MLCT states of Ru(bpy)₂(dcbpy) adsorbed on nanocrystalline SnO₂ under negative applied bias

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