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Ultra-fast co-sensitization and tri-sensitization of dye-sensitized solar cells with N719, SQ1 and triarylamine dyes

Ultra-fast co-sensitization and tri-sensitization of dye-sensitized solar cells with N719, SQ1 and triarylamine dyes
Ultra-fast co-sensitization and tri-sensitization of dye-sensitized solar cells with N719, SQ1 and triarylamine dyes
This paper describes the synthesis of a new, yellow triphenylamine dye, 4-[2-(4-diphenylaminophenyl) vinyl] benzoic acid] (6), with a sorption maximum at 380 nm in solution for which EQE data show shifts to 420 nm on sorption to TiO2. The performance of this dye has been measured in dye-sensitized solar cell (DSC) devices, showing eta = 2.6% for 1 cm(2) devices. Light soaking of (6) shows excellent long-term stability with <10% variation in device performance over 1800 h. Full characterization data are reported for (6) and the intermediates used in its synthesis including single-crystal X-ray structural analysis of all compounds. The paper also describes the ultra-fast dye sensitization and co-sensitization of TiO2 photo-electrodes in 5 minutes using one or two dyes and the first example of ultra-fast tri-sensitization. The dyes tested include the ruthenium dye N719, the squaraine dye SQ1, the red triphenylamine dye 2-cyano-3-{4-[2-(4-diphenylaminophenyl)vinyl]phenyl} acrylic acid (5) and (6). DSC efficiencies of 7.5% have been achieved for 1 cm(2) devices co-sensitized using (6) and N719. These efficiencies exceed those recorded for single dye devices and EQE measurements confirm efficient photon capture from two or more dyes in a single photo-electrode. Photo-acoustic calorimetry (PAC) has also been used to measure the energy of the charge separation states formed for (6) and N719, showing a larger value (1.47 eV) for (6) compared to N719 (1.08 eV), whilst a TiO2 film co-sensitized with both (6) and N719 gave an intermediate value (1.28 eV). These data have been used to calculate dye HOMO, LUMO and lambda(max) levels for (6) and N719 leading to important insights for future successful co-sensitization.
13318-13327
Holliman, Peter J.
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Mohsen, Moneer
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Connell, Arthur
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Davies, Matthew L.
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Al-Salihi, Kareem
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Pitak, Mateusz B.
eeb6a00f-2291-4376-830f-d30dfd607ed1
Tizzard, Graham J.
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Coles, Simon J.
3116f58b-c30c-48cf-bdd5-397d1c1fecf8
Harrington, Ross W.
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Clegg, William
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Serpa, Carlos
c5932aa5-308e-43ba-b528-54755014a754
Fontes, Octávio H.
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Charbonneau, Cecile
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Carnie, Matthew J.
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Holliman, Peter J.
6a747393-e1fa-485f-aa9e-b71c7cd31e56
Mohsen, Moneer
41e13a88-bfba-4bf0-a432-6a1a88bdd427
Connell, Arthur
14db3268-a050-49a5-bb3d-a77103ab596c
Davies, Matthew L.
fd7f51fb-47be-4fe1-9359-5a7d1271b3fc
Al-Salihi, Kareem
aacb725e-1176-45b4-b54f-1e4baec1beb9
Pitak, Mateusz B.
eeb6a00f-2291-4376-830f-d30dfd607ed1
Tizzard, Graham J.
8474c0fa-40df-43a6-a662-7f3c4722dbf2
Coles, Simon J.
3116f58b-c30c-48cf-bdd5-397d1c1fecf8
Harrington, Ross W.
01d1f0bc-fc3e-43ae-a087-6cce0278128e
Clegg, William
5b1994af-8799-4402-9c01-8479959de00b
Serpa, Carlos
c5932aa5-308e-43ba-b528-54755014a754
Fontes, Octávio H.
839c092d-14a4-4321-b9f7-513bc97091e7
Charbonneau, Cecile
9bb4b506-3e7d-4cb0-b6bc-21605dfe28b2
Carnie, Matthew J.
7d4260da-50a1-4451-9c29-60cb3ce99e23

Holliman, Peter J., Mohsen, Moneer, Connell, Arthur, Davies, Matthew L., Al-Salihi, Kareem, Pitak, Mateusz B., Tizzard, Graham J., Coles, Simon J., Harrington, Ross W., Clegg, William, Serpa, Carlos, Fontes, Octávio H., Charbonneau, Cecile and Carnie, Matthew J. (2012) Ultra-fast co-sensitization and tri-sensitization of dye-sensitized solar cells with N719, SQ1 and triarylamine dyes. Journal of Materials Chemistry, 22 (26), 13318-13327. (doi:10.1039/c2jm31314f).

Record type: Article

Abstract

This paper describes the synthesis of a new, yellow triphenylamine dye, 4-[2-(4-diphenylaminophenyl) vinyl] benzoic acid] (6), with a sorption maximum at 380 nm in solution for which EQE data show shifts to 420 nm on sorption to TiO2. The performance of this dye has been measured in dye-sensitized solar cell (DSC) devices, showing eta = 2.6% for 1 cm(2) devices. Light soaking of (6) shows excellent long-term stability with <10% variation in device performance over 1800 h. Full characterization data are reported for (6) and the intermediates used in its synthesis including single-crystal X-ray structural analysis of all compounds. The paper also describes the ultra-fast dye sensitization and co-sensitization of TiO2 photo-electrodes in 5 minutes using one or two dyes and the first example of ultra-fast tri-sensitization. The dyes tested include the ruthenium dye N719, the squaraine dye SQ1, the red triphenylamine dye 2-cyano-3-{4-[2-(4-diphenylaminophenyl)vinyl]phenyl} acrylic acid (5) and (6). DSC efficiencies of 7.5% have been achieved for 1 cm(2) devices co-sensitized using (6) and N719. These efficiencies exceed those recorded for single dye devices and EQE measurements confirm efficient photon capture from two or more dyes in a single photo-electrode. Photo-acoustic calorimetry (PAC) has also been used to measure the energy of the charge separation states formed for (6) and N719, showing a larger value (1.47 eV) for (6) compared to N719 (1.08 eV), whilst a TiO2 film co-sensitized with both (6) and N719 gave an intermediate value (1.28 eV). These data have been used to calculate dye HOMO, LUMO and lambda(max) levels for (6) and N719 leading to important insights for future successful co-sensitization.

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More information

e-pub ahead of print date: 2 May 2012
Organisations: Organic Chemistry: Synthesis, Catalysis and Flow

Identifiers

Local EPrints ID: 346095
URI: http://eprints.soton.ac.uk/id/eprint/346095
PURE UUID: 4acc1736-8646-4772-92de-e91a15ef1290
ORCID for Mateusz B. Pitak: ORCID iD orcid.org/0000-0002-3680-7100
ORCID for Graham J. Tizzard: ORCID iD orcid.org/0000-0002-1577-5779
ORCID for Simon J. Coles: ORCID iD orcid.org/0000-0001-8414-9272

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Date deposited: 19 Dec 2012 08:58
Last modified: 15 Mar 2024 03:10

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Contributors

Author: Peter J. Holliman
Author: Moneer Mohsen
Author: Arthur Connell
Author: Matthew L. Davies
Author: Kareem Al-Salihi
Author: Mateusz B. Pitak ORCID iD
Author: Simon J. Coles ORCID iD
Author: Ross W. Harrington
Author: William Clegg
Author: Carlos Serpa
Author: Octávio H. Fontes
Author: Cecile Charbonneau
Author: Matthew J. Carnie

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