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Conference paperDurrant JR, Nelson J, Klug DR, 2000,
Functionalising nanocrystalline TiO<sub>2</sub> films: dye sensitised solar cells and optical biosensors
, Materials Congress 2000, Publisher: SAGE PUBLICATIONS INC, Pages: 1345-1348, ISSN: 0267-0836- Cite
- Citations: 16
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Journal articleKirchartz T, Deledalle F, Tuladhar PS, et al., 2013,
On the Differences between Dark and Light Ideality Factor in Polymer:Fullerene Solar Cells
, JOURNAL OF PHYSICAL CHEMISTRY LETTERS, Vol: 4, Pages: 2371-2376, ISSN: 1948-7185- Author Web Link
- Cite
- Citations: 244
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Journal articleShoaee S, Subramaniyan S, Xin H, et al., 2013,
Charge Photogeneration for a Series of Thiazolo-Thiazole Donor Polymers Blended with the Fullerene Electron Acceptors PCBM and ICBA
, ADVANCED FUNCTIONAL MATERIALS, Vol: 23, Pages: 3286-3298, ISSN: 1616-301X- Author Web Link
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- Citations: 160
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Journal articleLi Z, Wong HC, Huang Z, et al., 2013,
Performance enhancement of fullerene-based solar cells by light processing
, NATURE COMMUNICATIONS, Vol: 4, ISSN: 2041-1723- Author Web Link
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- Citations: 112
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Journal articleFaist MA, Shoaee S, Tuladhar S, et al., 2013,
Understanding the Reduced Efficiencies of Organic Solar Cells Employing Fullerene Multiadducts as Acceptors
, ADVANCED ENERGY MATERIALS, Vol: 3, Pages: 744-752, ISSN: 1614-6832- Cite
- Citations: 130
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Conference paperPatel M, Mallia G, Harrison NM, 2013,
The structure of water on rutile TiO2(110) for applications in solar hydrogen production: towards a predictive model using hybrid-exchange density functional theory
, MRS Spring Meeting 2013 -
Journal articleAshraf RS, Schroeder BC, Bronstein HA, et al., 2013,
The Influence of Polymer Purification on Photovoltaic Device Performance of a Series of Indacenodithiophene Donor Polymers
, ADVANCED MATERIALS, Vol: 25, Pages: 2029-2034, ISSN: 0935-9648- Author Web Link
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- Citations: 127
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Journal articleDibb GFA, Jamieson FC, Maurano A, et al., 2013,
Limits on the Fill Factor in Organic Photovoltaics: Distinguishing Nongeminate and Geminate Recombination Mechanisms
, JOURNAL OF PHYSICAL CHEMISTRY LETTERS, Vol: 4, Pages: 803-808, ISSN: 1948-7185- Author Web Link
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- Citations: 112
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Journal articleZhong H, Li Z, Deledalle F, et al., 2013,
Fused Dithienogermolodithiophene Low Band Gap Polymers for High-Performance Organic Solar Cells without Processing Additives
, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 135, Pages: 2040-2043, ISSN: 0002-7863- Author Web Link
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- Citations: 144
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Journal articleBiniek L, Schroeder BC, Donaghey JE, et al., 2013,
New Fused Bis-Thienobenzothienothiophene Copolymers and Their Use in Organic Solar Cells and Transistors
, Macromolecules, Vol: 46, Pages: 727-735, ISSN: 0024-9297 -
Journal articleBakulin AA, Dimitrov SD, Rao A, et al., 2013,
Charge-Transfer State Dynamics Following Hole and Electron Transfer in Organic Photovoltaic Devices
, JOURNAL OF PHYSICAL CHEMISTRY LETTERS, Vol: 4, Pages: 209-215, ISSN: 1948-7185- Author Web Link
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- Citations: 127
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Journal articleTan TAT, Clarke TM, James D, et al., 2013,
Synthesis and photo-induced charge separation of confined conjugation length phenylene vinylene-based polymers
, POLYMER CHEMISTRY, Vol: 4, Pages: 5305-5309, ISSN: 1759-9954- Author Web Link
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- Citations: 12
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Journal articleWestacott P, Tumbleston JR, Shoaee S, et al., 2013,
On the role of intermixed phases in organic photovoltaic blends
, Energy & Environmental Science, ISSN: 1754-5692 -
Journal articleBarroso M, Pendlebury SR, Cowan AJ, et al., 2013,
Charge carrier trapping, recombination and transfer in hematite (α-Fe<sub>2</sub>O<sub>3</sub>) water splitting photoanodes
, CHEMICAL SCIENCE, Vol: 4, Pages: 2724-2734, ISSN: 2041-6520- Author Web Link
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- Citations: 442
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Journal articleBronstein H, Collado-Fregoso E, Hadipour A, et al., 2013,
Thieno [3, 2-b] thiophene-diketopyrrolopyrrole Containing Polymers for Inverted Solar Cells Devices with High Short Circuit Currents
, Advanced Functional Materials -
Journal articleReynal A, Lakadamyali F, Gross MA, et al., 2013,
Parameters affecting electron transfer dynamics from semiconductors to molecular catalysts for the photochemical reduction of protons
, Energy & Environmental Science, ISSN: 1754-5692The aim of this work is to use transient absorption spectroscopy to study the parameters affecting the kinetics and efficiency of electron transfer in a photocatalytic system for water reduction based on a cobalt proton reduction catalyst (CoP) adsorbed on a nanocrystalline TiO2 film. In the first approach, water is used as the proton and electron source and H2 is generated after band gap excitation of TiO2 functionalised with CoP. The second system involves the use of a sacrificial electron donor to regenerate the TiO2/CoP system in water at neutral pH. The third system consists of CoP/TiO2 films co-sensitised with a ruthenium-based dye (RuP). In particular, we focus on the study of different parameters that affect the kinetics of electron transfer from the semiconductor to the molecular catalyst by monitoring the lifetime of charge carriers in TiO2. We observe that low catalyst loadings onto the surface of TiO2, high excitation light intensities and small driving forces strongly slow down the kinetics and/or reduce the efficiency of the electron transfer at the interface. We conclude that the first reduction of the catalyst from CoIII to CoII can proceed efficiently even in the absence of an added hole scavenger at sufficiently high catalyst coverages and low excitation densities. In contrast, the second reduction from CoII to CoI, which is required for hydrogen evolution, appears to be at least 105 slower, suggesting it requires efficient hole scavenging and almost complete reduction of all the adsorbed CoP to CoII. Dye sensitisation enables visible light photoactivity, although this is partly offset by slower, and less efficient, hole scavenging.
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Journal articleCowan AJ, Leng W, Barnes PRF, et al., 2013,
Charge carrier separation in nanostructured TiO<sub>2</sub> photoelectrodes for water splitting
, PHYSICAL CHEMISTRY CHEMICAL PHYSICS, Vol: 15, Pages: 8772-8778, ISSN: 1463-9076- Author Web Link
- Cite
- Citations: 68
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Journal articleRumer JW, Dai S-Y, Levick M, et al., 2013,
Dihydropyrroloindoledione-based copolymers for organic electronics
, JOURNAL OF MATERIALS CHEMISTRY C, Vol: 1, Pages: 2711-2716, ISSN: 2050-7526- Author Web Link
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- Citations: 18
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Journal articleRumer JW, Levick M, Dai S-Y, et al., 2013,
BPTs: thiophene-flanked benzodipyrrolidone conjugated polymers for ambipolar organic transistors
, CHEMICAL COMMUNICATIONS, Vol: 49, Pages: 4465-4467, ISSN: 1359-7345- Author Web Link
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- Citations: 67
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Journal articleSoon YW, Cho H, Low J, et al., 2013,
Correlating triplet yield, singlet oxygen generation and photochemical stability in polymer/fullerene blend films
, Chemical Communications, Vol: 49, Pages: 1291-1293, ISSN: 1359-7345The photostability of two donor polymers, DPP-TT-T and PTB7, is compared in neat films and blend films with PC71BM. In both neat and blend films, PTB7 is shown to be relatively unstable. This observation is shown to correlate with transient optical studies of long lived polymer triplets and with molecular probe studies of singlet oxygen yields.
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Journal articleCowan AJ, Durrant JR, 2013,
Long-lived charge separated states in nanostructured semiconductor photoelectrodes for the production of solar fuels
, CHEMICAL SOCIETY REVIEWS, Vol: 42, Pages: 2281-2293, ISSN: 0306-0012- Cite
- Citations: 322
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Journal articleDimitrov SD, Bakulin AA, Nielsen CB, et al., 2012,
On the Energetic Dependence of Charge Separation in Low-Band-Gap Polymer/Fullerene Blends
, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 134, Pages: 18189-18192, ISSN: 0002-7863- Author Web Link
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- Citations: 180
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Journal articleFezile Lakadamyali, Anna Reynal, Masaru Kato, et al., 2012,
Electron Transfer in Dye-Sensitised Semiconductors Modified with Molecular Cobalt Catalysts: Photoreduction of Aqueous Protons
, Chem. Eur. J. -
Journal articleBarroso M, Mesa CA, Pendlebury SR, et al., 2012,
Dynamics of photogenerated holes in surface modified α-Fe<sub>2</sub>O<sub>3</sub> photoanodes for solar water splitting
, PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, Vol: 109, Pages: 15640-15645, ISSN: 0027-8424- Author Web Link
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- Citations: 418
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Journal articleSchroeder BC, Ashraf RS, Thomas S, et al., 2012,
Synthesis of novel thieno[3,2-b]thienobis(silolothiophene) based low bandgap polymers for organic photovoltaics.
, Chem Commun (Camb), Vol: 48, Pages: 7699-7701, ISSN: 1364-548XThieno[3,2-b]thienobis(silolothiophene), a new electron rich hexacyclic monomer has been synthesized and incorporated into three novel donor-acceptor low-bandgap polymers. By carefully choosing the acceptor co-monomer, the energy levels of the polymers could be modulated and high power conversion efficiencies of 5.52% were reached in OPV devices.
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Conference paperSchroeder BC, Bronstein HA, Ashraf RS, et al., 2012,
Electronic structure tuning of new fused thieno[3,2-b]thieno bisthiophene based polymers via alkyl chain and Group IV heteroatom modulation
, SPIE Optics & Photonics -
Journal articleTachibana Y, Vayssieres L, Durrant JR, 2012,
Artificial photosynthesis for solar water-splitting
, NATURE PHOTONICS, Vol: 6, Pages: 511-518, ISSN: 1749-4885- Author Web Link
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- Citations: 1855
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Journal articleXin H, Subramaniyan S, Kwon T-W, et al., 2012,
Enhanced Open Circuit Voltage and Efficiency of Donor-Acceptor Copolymer Solar Cells by Using Indene-C60 Bisadduct
, CHEMISTRY OF MATERIALS, Vol: 24, Pages: 1995-2001, ISSN: 0897-4756- Author Web Link
- Cite
- Citations: 99
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Journal articleCredgington D, Durrant JR, 2012,
Insights from Transient Optoelectronic Analyses on the Open-Circuit Voltage of Organic Solar Cells
, JOURNAL OF PHYSICAL CHEMISTRY LETTERS, Vol: 3, Pages: 1465-1478, ISSN: 1948-7185- Author Web Link
- Cite
- Citations: 244
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Journal articleSchroeder BC, Huang Z, Ashraf RS, et al., 2012,
Silaindacenodithiophene-Based Low Band Gap Polymers - The Effect of Fluorine Substitution on Device Performances and Film Morphologies
, ADVANCED FUNCTIONAL MATERIALS, Vol: 22, Pages: 1663-1670, ISSN: 1616-301XSilaindacenodithiophene is copolymerized with benzo[c][1,2,5]thiadiazole (BT) and 4,7-di(thiophen-2-yl)benzo[c][1,2,5]thiadiazole (DTBT), respectively their fluorinated counter parts 5,6-difluorobenzo[c][1,2,5]thiadiazole (2FBT) and 5,6-difluoro-4,7-di(thiophen-2-yl) benzo[c][1,2,5]thiadiazole (2FDTBT). The influence of the thienyl spacers and fluorine atoms on molecular packing and active layer morphology is investigated with regard to device performances. bulk heterojunction (BHJ) solar cells based on silaindacenodithiophene donor-acceptor polymers achieved PCE's of 4.5% and hole mobilities of as high as 0.28 cm2/(V s) are achieved in an organic field-effect transistor (OFET).
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