Interfacial charge transfer and colloidal semiconductor dye-sensitization: Mechanism assessment via Stark emission spectroscopy

Keith A. Walters; Dennis A. Gaal; Joseph T. Hupp

doi:10.1021/jp015540c

Interfacial charge transfer and colloidal semiconductor dye-sensitization: Mechanism assessment via Stark emission spectroscopy

Keith A. Walters, Dennis A. Gaal, Joseph T. Hupp^*

^*Corresponding author for this work

Chemistry

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

80 Scopus citations

Abstract

Stark emission spectroscopy has been used to assess the nature of light-induced charge-injection processes occurring at molecular-dye/colloidal-semiconductor interfaces. Experiments reveal that eosin Y injects via a locally excited (LE) state. Coumarin-343 conceivably may react via an interfacial charge transfer state, although a simpler explanation centering on an environmentally perturbed LE state also is consistent with the experimental evidence.

Original language	English (US)
Pages (from-to)	5139-5142
Number of pages	4
Journal	Journal of Physical Chemistry B
Volume	106
Issue number	20
DOIs	https://doi.org/10.1021/jp015540c
State	Published - May 23 2002

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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title = "Interfacial charge transfer and colloidal semiconductor dye-sensitization: Mechanism assessment via Stark emission spectroscopy",

abstract = "Stark emission spectroscopy has been used to assess the nature of light-induced charge-injection processes occurring at molecular-dye/colloidal-semiconductor interfaces. Experiments reveal that eosin Y injects via a locally excited (LE) state. Coumarin-343 conceivably may react via an interfacial charge transfer state, although a simpler explanation centering on an environmentally perturbed LE state also is consistent with the experimental evidence.",

author = "Walters, {Keith A.} and Gaal, {Dennis A.} and Hupp, {Joseph T.}",

year = "2002",

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AU - Walters, Keith A.

AU - Gaal, Dennis A.

AU - Hupp, Joseph T.

PY - 2002/5/23

Y1 - 2002/5/23

N2 - Stark emission spectroscopy has been used to assess the nature of light-induced charge-injection processes occurring at molecular-dye/colloidal-semiconductor interfaces. Experiments reveal that eosin Y injects via a locally excited (LE) state. Coumarin-343 conceivably may react via an interfacial charge transfer state, although a simpler explanation centering on an environmentally perturbed LE state also is consistent with the experimental evidence.

AB - Stark emission spectroscopy has been used to assess the nature of light-induced charge-injection processes occurring at molecular-dye/colloidal-semiconductor interfaces. Experiments reveal that eosin Y injects via a locally excited (LE) state. Coumarin-343 conceivably may react via an interfacial charge transfer state, although a simpler explanation centering on an environmentally perturbed LE state also is consistent with the experimental evidence.

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Interfacial charge transfer and colloidal semiconductor dye-sensitization: Mechanism assessment via Stark emission spectroscopy

Abstract

ASJC Scopus subject areas

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