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

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

Research output: Contribution to journalArticle

74 Citations (Scopus)

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 languageEnglish
Pages (from-to)5139-5142
Number of pages4
JournalJournal of Physical Chemistry B
Volume106
Issue number20
DOIs
Publication statusPublished - May 23 2002

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Emission spectroscopy
Excited states
Charge transfer
Coloring Agents
Dyes
dyes
charge transfer
Semiconductor materials
Charge injection
Eosine Yellowish-(YS)
spectroscopy
excitation
injection
Experiments
coumarin 343

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Interfacial charge transfer and colloidal semiconductor dye-sensitization : Mechanism assessment via Stark emission spectroscopy. / Walters, Keith A.; Gaal, Dennis A.; Hupp, Joseph T.

In: Journal of Physical Chemistry B, Vol. 106, No. 20, 23.05.2002, p. 5139-5142.

Research output: Contribution to journalArticle

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