Probing the Relative Photoinjection Yields of Monomer and Aggregated Dyes into ZnO Crystals.

King, Laurie A ORCID: https://orcid.org/0000-0002-0772-2378 and Parkinson, BA (2017) Probing the Relative Photoinjection Yields of Monomer and Aggregated Dyes into ZnO Crystals. Langmuir: the ACS journal of surfaces and colloids, 33 (2). pp. 468-474. ISSN 0743-7463

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Official URL: https://pubs.acs.org/doi/10.1021/acs.langmuir.6b03...

Abstract

Cyanine dyes, often used in dye-sensitized solar cells (DSSCs), form a range of molecular species from monomers to large H and J aggregates in both solution and when adsorbed at a photoelectrode surface. To determine the relative capability of the different dye species to inject photoexcited electrons into a wideband gap oxide semiconductor, sensitization at a single-crystal zinc oxide surface was studied by simultaneous attenuated reflection (ATR) ultraviolet-visible (UV-vis) absorption and photocurrent spectroscopy measurements. ATR measurements enable identification of the dye species populating the surface with simultaneous photocurrent spectroscopy to identify the contribution of the various dye forms to photocurrent signal. We study the dye 2,2'-carboxymethylthiodicarbocyanine bromide that is particularly prone to aggregation both in solution and at the surface of sensitized oxide semiconductors.

Item Type:	Article
Peer-reviewed:	Yes
Date Deposited:	05 Nov 2019 09:32
Publisher:	American Chemical Society (ACS)
Additional Information:	This is an Author Accepted Manuscript of an article published in Langmuir by ACS.
Divisions:	Faculties > Science and Engineering
Subject terms:	Science & Technology, Physical Sciences, Technology, Chemistry, Multidisciplinary, Chemistry, Physical, Materials Science, Multidisciplinary, Chemistry, Materials Science, SENSITIZED SOLAR-CELLS, CYANINE DYES, ELECTRON INJECTION, CHARGE-TRANSFER, ELECTROCHEMICAL INVESTIGATIONS, SPECTRAL SENSITIZATION, TIO2 NANOPARTICLES, TRANSFER DYNAMICS, THIACYANINE DYES, TITANIUM-DIOXIDE, MD Multidisciplinary, Chemical Physics
URI:	https://e-space.mmu.ac.uk/id/eprint/624302
DOI:	https://doi.org/10.1021/acs.langmuir.6b03395
ISSN	0743-7463
e-ISSN	1520-5827

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