Optoelectronic properties of natural cyanin dyes

A. Calzolari*, D. Varsano, A. Ruini, A. Catellani, R. Tel-Vered, H. B. Yildiz, O. Ovits, I. Willner

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

An integrated theoretical/experimental study of the natural cyanin dye is presented in terms of its structural and optoelectronic properties for different gas-phase and prototypical device configurations. Our microscopic analysis reveals the impact of hydration and hydroxylation reactions, as well as of the attached sugar, on ground and optically excited states, and it illustrates the visible-light harvesting capability of the dye. Our optical experiments at different and controlled pH concentrations allow for a direct comparison with theoretical results. We analyze the many different contributions to photocurrent of the various portions of a prototypical device and, as a proof of principle, we propose the addition of specific ligands to control the increase of the photocurrent yield in the cyanin-based electrochemical device.

Original languageEnglish
Pages (from-to)8801-8810
Number of pages10
JournalJournal of Physical Chemistry A
Volume113
Issue number30
DOIs
StatePublished - 30 Jul 2009

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