Red-absorbing cationic acceptor dyes for photocathodes in tandem solar cells

Christopher J. Wood; Ming Cheng; Charlotte A. Clark; Raphael Horvath; Ian P. Clark; Michelle L. Hamilton; Michael Towrie; Michael W. George; Licheng Sun; Xichuan Yang; Elizabeth A. Gibson

doi:10.1021/jp4119937

Red-absorbing cationic acceptor dyes for photocathodes in tandem solar cells

Christopher J. Wood, Ming Cheng, Charlotte A. Clark, Raphael Horvath, Ian P. Clark, Michelle L. Hamilton, Michael Towrie, Michael W. George, Licheng Sun, Xichuan Yang, Elizabeth A. Gibson

Research output: Journal Publication › Article › peer-review

52 Citations (Scopus)

Abstract

A pair of new donor-π-acceptor dyes that absorb toward the red region of the visible spectrum (CAD 1 and CAD 2) utilizing indolium cationic acceptor units have been synthesized for use in p-type dye-sensitized solar cells (p-DSC). Their optical and electrochemical properties were determined experimentally, including application of ultrafast transient absorption and time-resolved infrared spectroscopies. Our results are supported by computational modeling. NiO-based p-DSCs with CAD 1 and CAD 2 gave short-circuit photocurrent densities of 3.6 and 3.3 mA cm^-2, respectively, which are substantially higher than that of any previous red-absorbing p-DSC. These results are a step toward tandem dye-sensitized solar cells that absorb higher-energy photons at the TiO₂ anode and lower-energy photons at the NiO cathode. Routes to further improve the efficiency of NiO DSCS are also discussed.

Original language	English
Pages (from-to)	16536-16546
Number of pages	11
Journal	Journal of Physical Chemistry C
Volume	118
Issue number	30
DOIs	https://doi.org/10.1021/jp4119937
Publication status	Published - 31 Jul 2014
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
General Energy
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1021/jp4119937

Cite this

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title = "Red-absorbing cationic acceptor dyes for photocathodes in tandem solar cells",

abstract = "A pair of new donor-π-acceptor dyes that absorb toward the red region of the visible spectrum (CAD 1 and CAD 2) utilizing indolium cationic acceptor units have been synthesized for use in p-type dye-sensitized solar cells (p-DSC). Their optical and electrochemical properties were determined experimentally, including application of ultrafast transient absorption and time-resolved infrared spectroscopies. Our results are supported by computational modeling. NiO-based p-DSCs with CAD 1 and CAD 2 gave short-circuit photocurrent densities of 3.6 and 3.3 mA cm-2, respectively, which are substantially higher than that of any previous red-absorbing p-DSC. These results are a step toward tandem dye-sensitized solar cells that absorb higher-energy photons at the TiO2 anode and lower-energy photons at the NiO cathode. Routes to further improve the efficiency of NiO DSCS are also discussed.",

author = "Wood, {Christopher J.} and Ming Cheng and Clark, {Charlotte A.} and Raphael Horvath and Clark, {Ian P.} and Hamilton, {Michelle L.} and Michael Towrie and George, {Michael W.} and Licheng Sun and Xichuan Yang and Gibson, {Elizabeth A.}",

year = "2014",

month = jul,

day = "31",

doi = "10.1021/jp4119937",

language = "English",

volume = "118",

pages = "16536--16546",

journal = "Journal of Physical Chemistry C",

issn = "1932-7447",

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TY - JOUR

T1 - Red-absorbing cationic acceptor dyes for photocathodes in tandem solar cells

AU - Wood, Christopher J.

AU - Cheng, Ming

AU - Clark, Charlotte A.

AU - Horvath, Raphael

AU - Clark, Ian P.

AU - Hamilton, Michelle L.

AU - Towrie, Michael

AU - George, Michael W.

AU - Sun, Licheng

AU - Yang, Xichuan

AU - Gibson, Elizabeth A.

PY - 2014/7/31

Y1 - 2014/7/31

N2 - A pair of new donor-π-acceptor dyes that absorb toward the red region of the visible spectrum (CAD 1 and CAD 2) utilizing indolium cationic acceptor units have been synthesized for use in p-type dye-sensitized solar cells (p-DSC). Their optical and electrochemical properties were determined experimentally, including application of ultrafast transient absorption and time-resolved infrared spectroscopies. Our results are supported by computational modeling. NiO-based p-DSCs with CAD 1 and CAD 2 gave short-circuit photocurrent densities of 3.6 and 3.3 mA cm-2, respectively, which are substantially higher than that of any previous red-absorbing p-DSC. These results are a step toward tandem dye-sensitized solar cells that absorb higher-energy photons at the TiO2 anode and lower-energy photons at the NiO cathode. Routes to further improve the efficiency of NiO DSCS are also discussed.

AB - A pair of new donor-π-acceptor dyes that absorb toward the red region of the visible spectrum (CAD 1 and CAD 2) utilizing indolium cationic acceptor units have been synthesized for use in p-type dye-sensitized solar cells (p-DSC). Their optical and electrochemical properties were determined experimentally, including application of ultrafast transient absorption and time-resolved infrared spectroscopies. Our results are supported by computational modeling. NiO-based p-DSCs with CAD 1 and CAD 2 gave short-circuit photocurrent densities of 3.6 and 3.3 mA cm-2, respectively, which are substantially higher than that of any previous red-absorbing p-DSC. These results are a step toward tandem dye-sensitized solar cells that absorb higher-energy photons at the TiO2 anode and lower-energy photons at the NiO cathode. Routes to further improve the efficiency of NiO DSCS are also discussed.

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DO - 10.1021/jp4119937

M3 - Article

AN - SCOPUS:84905457055

SN - 1932-7447

VL - 118

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EP - 16546

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

IS - 30

ER -

Red-absorbing cationic acceptor dyes for photocathodes in tandem solar cells

Abstract

ASJC Scopus subject areas

UN SDGs

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