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• Journal article
  Dibb GFA, Muth M-A, Kirchartz T, Engmann S, Hoppe H, Gobsch G, Thelakkat M, Blouin N, Tierney S, Carrasco-Orozco M, Durrant JR, Nelson Jet al., 2013,

  Influence of doping on charge carrier collection in normal and inverted geometry polymer: fullerene solar cells

  , SCIENTIFIC REPORTS, Vol: 3, ISSN: 2045-2322
  • Cite
  • Citations: 65
• Journal article
  Bronstein H, Hurhangee M, Fregoso EC, Beatrup D, Soon YW, Huang Z, Hadipour A, Tuladhar PS, Rossbauer S, Sohn E-H, Shoaee S, Dimitrov SD, Frost JM, Ashraf RS, Kirchartz T, Watkins SE, Song K, Anthopoulos T, Nelson J, Rand BP, Durrant JR, McCulloch Iet al., 2013,

  Isostructural, Deeper Highest Occupied Molecular Orbital Analogues of Poly(3-hexylthiophene) for High-Open Circuit Voltage Organic Solar Cells

  , CHEMISTRY OF MATERIALS, Vol: 25, Pages: 4239-4249, ISSN: 0897-4756
  • Cite
  • Citations: 64
• Journal article
  Ryan JW, Kirchartz T, Viterisi A, Nelson J, Palomares Eet al., 2013,

  Understanding the Effect of Donor Layer Thickness and a MoO₃ Hole Transport Layer on the Open-Circuit Voltage in Squaraine/C₆₀ Bilayer Solar Cells

  , JOURNAL OF PHYSICAL CHEMISTRY C, Vol: 117, Pages: 19866-19874, ISSN: 1932-7447
  • Author Web Link
  • Cite
  • Citations: 26
• Journal article
  Bruno A, Reynolds LX, Dyer-Snaith C, Nelson J, Haque SAet al., 2013,

  Determining the Exciton Diffusion Length in a Polyfluorene from Ultrafast Fluorescence Measurements of Polymer/Fullerene Blend Films

  , JOURNAL OF PHYSICAL CHEMISTRY C, Vol: 117, Pages: 19832-19838, ISSN: 1932-7447
  • Cite
  • Citations: 54
• Journal article
  Hawks SA, Deledalle F, Yao J, Rebois DG, Li G, Nelson J, Yang Y, Kirchartz T, Durrant JRet al., 2013,

  Relating Recombination, Density of States, and Device Performance in an Efficient Polymer: Fullerene Organic Solar Cell Blend

  , ADVANCED ENERGY MATERIALS, Vol: 3, Pages: 1201-1209, ISSN: 1614-6832
  • Author Web Link
  • Cite
  • Citations: 96
• Journal article
  James DT, Frost JM, Wade J, Nelson J, Kim J-Set al., 2013,

  Controlling Microstructure of Pentacene Derivatives by Solution Processing: Impact of Structural Anisotropy on Optoelectronic Properties

  , ACS NANO, Vol: 7, Pages: 7983-7991, ISSN: 1936-0851
  • Author Web Link
  • Cite
  • Citations: 90
• Journal article
  Nelson J, Emmott CJM, 2013,

  Can solar power deliver?

  , PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, Vol: 371, ISSN: 1364-503X
  • Cite
  • Citations: 7
• Journal article
  Meager I, Ashraf RS, Mollinger S, Schroeder BC, Bronstein H, Beatrup D, Vezie MS, Kirchartz T, Salleo A, Nelson J, McCulloch Iet al., 2013,

  Photocurrent Enhancement from Diketopyrrolopyrrole Polymer Solar Cells through Alkyl-Chain Branching Point Manipulation

  , JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 135, Pages: 11537-11540, ISSN: 0002-7863
  • Author Web Link
  • Cite
  • Citations: 265
• Journal article
  Meager I, Ashraf RS, Mollinger S, Schroeder BC, Bronstein H, Beatrup D, Vezie MS, Kirchartz T, Salleo A, Nelson J, McCulloch Iet al., 2013,

  Photocurrent enhancement from diketopyrrolopyrrole polymer solar cells through alkyl-chain branching point manipulation.

  , J Am Chem Soc, Vol: 135, Pages: 11537-11540

  Systematically moving the alkyl-chain branching position away from the polymer backbone afforded two new thieno[3,2-b]thiophene-diketopyrrolopyrrole (DPPTT-T) polymers. When used as donor materials in polymer:fullerene solar cells, efficiencies exceeding 7% were achieved without the use of processing additives. The effect of the position of the alkyl-chain branching point on the thin-film morphology was investigated using X-ray scattering techniques and the effects on the photovoltaic and charge-transport properties were also studied. For both solar cell and transistor devices, moving the branching point further from the backbone was beneficial. This is the first time that this effect has been shown to improve solar cell performance. Strong evidence is presented for changes in microstructure across the series, which is most likely the cause for the photocurrent enhancement.

  • Abstract
  • Author Web Link
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• Journal article
  Vithanage DA, Devizis A, Abramavicius V, Infahsaeng Y, Abramavicius D, MacKenzie RCI, Keivanidis PE, Yartsev A, Hertel D, Nelson J, Sundstrom V, Gulbinas Vet al., 2013,

  Visualizing charge separation in bulk heterojunction organic solar cells

  , NATURE COMMUNICATIONS, Vol: 4, ISSN: 2041-1723
  • Cite
  • Citations: 174
• Conference paper
  Durrant JR, Nelson J, Klug DR, 2013,

  Functionalising nanocrystalline TiO₂ films: dye sensitised solar cells and optical biosensors

  , Materials Congress 2000, Publisher: SAGE PUBLICATIONS INC, Pages: 1345-1348, ISSN: 0267-0836
  • Cite
  • Citations: 16
• Journal article
  Kirchartz T, Deledalle F, Tuladhar PS, Durrant JR, Nelson Jet 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
• Journal article
  MacKenzie RCI, Shuttle CG, Dibb GF, Treat N, von Hauff E, Robb MJ, Hawker CJ, Chabinyc ML, Nelson Jet al., 2013,

  Interpreting the Density of States Extracted from Organic Solar Cells Using Transient Photocurrent Measurements

  , JOURNAL OF PHYSICAL CHEMISTRY C, Vol: 117, Pages: 12407-12414, ISSN: 1932-7447
  • Cite
  • Citations: 76
• Journal article
  Faist MA, Shoaee S, Tuladhar S, Dibb GFA, Foster S, Gong W, Kirchartz T, Bradley DDC, Durrant JR, Nelson Jet 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
• Journal article
  Xia R, Leem D-S, Kirchartz T, Spencer S, Murphy C, He Z, Wu H, Su S, Cao Y, Kim JS, deMello JC, Bradley DDC, Nelson Jet al., 2013,

  Investigation of a Conjugated Polyelectrolyte Interlayer for Inverted Polymer:Fullerene Solar Cells

  , ADVANCED ENERGY MATERIALS, Vol: 3, Pages: 718-723, ISSN: 1614-6832
  • Author Web Link
  • Cite
  • Citations: 92
• Journal article
  Janssen RAJ, Nelson J, 2013,

  Factors Limiting Device Efficiency in Organic Photovoltaics

  , ADVANCED MATERIALS, Vol: 25, Pages: 1847-1858, ISSN: 0935-9648
  • Cite
  • Citations: 561
• Journal article
  Bansal N, Reynolds LX, MacLachlan A, Lutz T, Ashraf RS, Zhang W, Nielsen CB, McCulloch I, Rebois DG, Kirchartz T, Hill MS, Molloy KC, Nelson J, Haque SAet al., 2013,

  Influence of Crystallinity and Energetics on Charge Separation in Polymer-Inorganic Nanocomposite Films for Solar Cells

  , SCIENTIFIC REPORTS, Vol: 3, ISSN: 2045-2322
  • Cite
  • Citations: 85
• Journal article
  Dibb GFA, Jamieson FC, Maurano A, Nelson J, Durrant JRet 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
  • Cite
  • Citations: 112
• Journal article
  Savva A, Petraki F, Elefteriou P, Sygellou L, Voigt M, Giannouli M, Kennou S, Nelson J, Bradley DDC, Brabec CJ, Choulis SAet al., 2013,

  The Effect of Organic and Metal Oxide Interfacial layers on the Performance of Inverted Organic Photovoltaics

  , ADVANCED ENERGY MATERIALS, Vol: 3, Pages: 391-398, ISSN: 1614-6832
  • Author Web Link
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  • Citations: 41
• Conference paper
  Wang X, Levermore PA, Ramon MC, Voigt M, Belton C, Lofts E, Cheung C, Stavrinou P, Nelson J, Bradley DDCet al., 2013,

  Paper no P33: Large-area printed transparent electrodes for flexible organic light-emitting diodes

  , Pages: 112-114, ISSN: 0097-966X

  We report large area gravure-printed flexible and transparent polymer electrodes for plastic electronics and in particular their application in organic light emitting diodes (OLEDs) for displays and lighting applications. The polymer electrodes are prepared from vapour-phase polymerised poly(3,4-ethylene-dioxythio- phene) (VPP-PEDOT). Gravure printing has been selected for this work owing to its proven compatibility with low-cost and high volume roll-to-roll manufacturing. The printed VPP- PEDOT thin films were characterised for their conductivity, transparency, work function and surface roughness. After optimisation of printed VPP-PEDOT thin film transparent electrodes, large-area-ITO free OLEDs were demonstrated.

  • Abstract
  • Cite
• Conference paper
  Wang X, Levermore PA, Ramon MC, Voigt M, Belton C, Lofts E, Cheung C, Stavrinou P, Nelson J, Bradley DDCet al., 2013,

  Paper no 19.2: Large-area printed transparent electrodes for flexible organic light-emitting diodes

  , Pages: 282-284, ISSN: 0097-966X

  We report large area gravure-printed flexible and transparent polymer electrodes for plastic electronics and in particular their application in organic light-emitting diodes (OLEDs) for displays and lighting applications. The polymer electrodes are prepared from vapour-phase polymerised p o ly (3,4-ethylene-dioxythio - phene) (VPP-PEDOT). Gravure printing has been selected for this work owing to its proven compatibility' with low-cost and high volume roll-to-roll manufacturing. The printed VPP- PEDOT thin films were characterised for their conductivity, transparency, work function and surface roughness. After optimisation of printed VPP-PEDOT thin film transparent electrodes, large area ITO free OLEDs were demonstrated.

  • Abstract
  • Cite
• Journal article
  Vaissier V, Barnes P, Kirkpatrick J, Nelson Jet al., 2013,

  Influence of polar medium on the reorganization energy of charge transfer between dyes in a dye sensitized film

  , PHYSICAL CHEMISTRY CHEMICAL PHYSICS, Vol: 15, Pages: 4804-4814, ISSN: 1463-9076
  • Cite
  • Citations: 85
• Journal article
  Economopoulos SP, Chochos CL, Ioannidou HA, Neophytou M, Charilaou C, Zissimou GA, Frost JM, Sachetan T, Shahid M, Nelson J, Heeney M, Bradley DDC, Itskos G, Koutentis PA, Choulis SAet al., 2013,

  Novel BODIPY-based conjugated polymers donors for organic photovoltaic applications

  , RSC ADVANCES, Vol: 3, Pages: 10221-10229
  • Cite
  • Citations: 31
• Journal article
  Kirchartz T, Agostinelli T, Campoy-Quiles M, Gong W, Nelson Jet al., 2012,

  Understanding the Thickness-Dependent Performance of Organic Bulk Heterojunction Solar Cells: The Influence of Mobility, Lifetime, and Space Charge

  , JOURNAL OF PHYSICAL CHEMISTRY LETTERS, Vol: 3, Pages: 3470-3475, ISSN: 1948-7185
  • Author Web Link
  • Cite
  • Citations: 247
• Journal article
  Kirchartz T, Nelson J, 2012,

  Meaning of reaction orders in polymer: fullerene solar cells

  , PHYSICAL REVIEW B, Vol: 86, ISSN: 2469-9950
  • Cite
  • Citations: 208
• Journal article
  Voigt MM, Mackenzie RCI, King SP, Yau CP, Atienzar P, Dane J, Keivanidis PE, Zadrazil I, Bradley DDC, Nelson Jet al., 2012,

  Gravure printing inverted organic solar cells: The influence of ink properties on film quality and device performance

  , SOLAR ENERGY MATERIALS AND SOLAR CELLS, Vol: 105, Pages: 77-85, ISSN: 0927-0248
  • Cite
  • Citations: 95
• Journal article
  Ravirajan P, Atienzar P, Nelson J, 2012,

  Post-Processing Treatments in Hybrid Polymer/Titanium Dioxide Multilayer Solar Cells

  , JOURNAL OF NANOELECTRONICS AND OPTOELECTRONICS, Vol: 7, Pages: 498-502, ISSN: 1555-130X
  • Cite
  • Citations: 8
• Journal article
  Gong W, Faist MA, Ekins-Daukes NJ, Xu Z, Bradley DDC, Nelson J, Kirchartz Tet al., 2012,

  Influence of energetic disorder on electroluminescence emission in polymer:fullerene solar cells

  , PHYSICAL REVIEW B, Vol: 86, ISSN: 1098-0121
  • Author Web Link
  • Cite
  • Citations: 79
• Journal article
  Keivanidis PE, Kamm V, Zhang W, Floudas G, Laquai F, McCulloch I, Bradley DDC, Nelson Jet al., 2012,

  Correlating Emissive Non-Geminate Charge Recombination with Photocurrent Generation Efficiency in Polymer/Perylene Diimide Organic Photovoltaic Blend Films

  , ADVANCED FUNCTIONAL MATERIALS, Vol: 22, Pages: 2318-2326, ISSN: 1616-301X
  • Cite
  • Citations: 29
• Journal article
  MacKenzie RCI, Shuttle CG, Chabinyc ML, Nelson Jet al., 2012,

  Extracting Microscopic Device Parameters from Transient Photocurrent Measurements of P3HT:PCBM Solar Cells

  , ADVANCED ENERGY MATERIALS, Vol: 2, Pages: 662-669, ISSN: 1614-6832
  • Cite
  • Citations: 194

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