Discrete photoelectrodes with dyes having different absorption wavelengths for efficient cobalt-based tandem dye-sensitised solar cells

Abstract A pn-tandem dye-sensitised solar cell (pn-DSSC) employing a set of sensitisers with complementary absorption spectra and a less-corrosive cobalt-based electrolyte is presented. We applied three organic sensitisers (denoted C343, DCBZ, and SQ) featuring different absorption wavelengths for t...

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Autores principales:	Phuong Ho, Suresh Thogiti, Yong Hui Lee, Jae Hong Kim
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2699ae0ad0c14d92986430d11d71fa82
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spelling	oai:doaj.org-article:2699ae0ad0c14d92986430d11d71fa822021-12-02T11:40:13ZDiscrete photoelectrodes with dyes having different absorption wavelengths for efficient cobalt-based tandem dye-sensitised solar cells10.1038/s41598-017-02480-y2045-2322https://doaj.org/article/2699ae0ad0c14d92986430d11d71fa822017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02480-yhttps://doaj.org/toc/2045-2322Abstract A pn-tandem dye-sensitised solar cell (pn-DSSC) employing a set of sensitisers with complementary absorption spectra and a less-corrosive cobalt-based electrolyte is presented. We applied three organic sensitisers (denoted C343, DCBZ, and SQ) featuring different absorption wavelengths for the p-DSSC, while keeping the n-DSSC sensitiser (denoted DCA10CN2) constant. Characterisation of the Co+2/+3-based DSSC devices revealed that SQ dye, with a longer absorption wavelength, showed broader spectra and increased photocurrent activity in the visible and near-infrared region compared to the other two devices with C343 and DCBZ in the pn-DSSCs. As a result, the short-circuit current density increased significantly to 4.00 mA cm−2, and the devices displayed overall power conversion efficiencies of as high as 1.41%, which is comparable to that of the best pn-DSSCs in the literature. Our results demonstrate that complementary absorption between the two photoelectrodes is important for enhancing the photovoltaic performance of pn-DSSCs.Phuong HoSuresh ThogitiYong Hui LeeJae Hong KimNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Phuong Ho Suresh Thogiti Yong Hui Lee Jae Hong Kim Discrete photoelectrodes with dyes having different absorption wavelengths for efficient cobalt-based tandem dye-sensitised solar cells
description	Abstract A pn-tandem dye-sensitised solar cell (pn-DSSC) employing a set of sensitisers with complementary absorption spectra and a less-corrosive cobalt-based electrolyte is presented. We applied three organic sensitisers (denoted C343, DCBZ, and SQ) featuring different absorption wavelengths for the p-DSSC, while keeping the n-DSSC sensitiser (denoted DCA10CN2) constant. Characterisation of the Co+2/+3-based DSSC devices revealed that SQ dye, with a longer absorption wavelength, showed broader spectra and increased photocurrent activity in the visible and near-infrared region compared to the other two devices with C343 and DCBZ in the pn-DSSCs. As a result, the short-circuit current density increased significantly to 4.00 mA cm−2, and the devices displayed overall power conversion efficiencies of as high as 1.41%, which is comparable to that of the best pn-DSSCs in the literature. Our results demonstrate that complementary absorption between the two photoelectrodes is important for enhancing the photovoltaic performance of pn-DSSCs.
format	article
author	Phuong Ho Suresh Thogiti Yong Hui Lee Jae Hong Kim
author_facet	Phuong Ho Suresh Thogiti Yong Hui Lee Jae Hong Kim
author_sort	Phuong Ho
title	Discrete photoelectrodes with dyes having different absorption wavelengths for efficient cobalt-based tandem dye-sensitised solar cells
title_short	Discrete photoelectrodes with dyes having different absorption wavelengths for efficient cobalt-based tandem dye-sensitised solar cells
title_full	Discrete photoelectrodes with dyes having different absorption wavelengths for efficient cobalt-based tandem dye-sensitised solar cells
title_fullStr	Discrete photoelectrodes with dyes having different absorption wavelengths for efficient cobalt-based tandem dye-sensitised solar cells
title_full_unstemmed	Discrete photoelectrodes with dyes having different absorption wavelengths for efficient cobalt-based tandem dye-sensitised solar cells
title_sort	discrete photoelectrodes with dyes having different absorption wavelengths for efficient cobalt-based tandem dye-sensitised solar cells
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/2699ae0ad0c14d92986430d11d71fa82
work_keys_str_mv	AT phuongho discretephotoelectrodeswithdyeshavingdifferentabsorptionwavelengthsforefficientcobaltbasedtandemdyesensitisedsolarcells AT sureshthogiti discretephotoelectrodeswithdyeshavingdifferentabsorptionwavelengthsforefficientcobaltbasedtandemdyesensitisedsolarcells AT yonghuilee discretephotoelectrodeswithdyeshavingdifferentabsorptionwavelengthsforefficientcobaltbasedtandemdyesensitisedsolarcells AT jaehongkim discretephotoelectrodeswithdyeshavingdifferentabsorptionwavelengthsforefficientcobaltbasedtandemdyesensitisedsolarcells
_version_	1718395691233968128

Discrete photoelectrodes with dyes having different absorption wavelengths for efficient cobalt-based tandem dye-sensitised solar cells

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