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• Journal article
  Schroeder BC, Huang Z, Ashraf RS, Smith J, D'Angelo P, Watkins SE, Anthopoulos TD, Durrant JR, McCulloch Iet 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: 1616-301X

  Silaindacenodithiophene 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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• Patent
  McCulloch I, Heeney M, Nielsen C, Zhang W, Fraser J, Schroeder Bet al., 2012,

  Triaryl- and triheteroaryl- benzene monomers and polymers for electrooptical applications

  , WO 2012131084

  The invention relates to mono-, oligo- and polymeric compds. comprising substituted triaryl- and triheteroaryl benzene groups and their copolymers. The invention further relates to the methods of their synthesis, to org. semiconducting materials and blends, formulations and layers comprising them, and to electronic devices, like org. field effect transistors (OFETs) and org. photovoltaics (OPVs), comprising them.

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• Journal article
  Chen Z, Lee MJ, Ashraf RS, Gu Y, Albert-Seifried S, Nielsen MM, Schroeder B, Anthopoulos TD, Heeney M, McCulloch I, Sirringhaus Het al., 2012,

  High-Performance Ambipolar Diketopyrrolopyrrole-Thieno[3,2-b]thiophene Copolymer Field-Effect Transistors with Balanced Hole and Electron Mobilities

  , ADVANCED MATERIALS, Vol: 24, Pages: 647-+, ISSN: 0935-9648

  Ambipolar OFETs with balanced hole and electron field-effect mobilities both exceeding 1 cm(2) V(-1) s(-1) are achieved based on a single-solution-processed conjugated polymer, DPPT-TT, upon careful optimization of the device architecture, charge injection, and polymer processing. Such high-performance OFETs are promising for applications in ambipolar devices and integrated circuits, as well as model systems for fundamental studies.

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• Journal article
  Kirkpatrick J, Nielsen CB, Zhang W, Bronstein H, Ashraf RS, Heeney M, McCulloch Iet al., 2012,

  A Systematic Approach to the Design Optimization of Light-Absorbing Indenofluorene Polymers for Organic Photovoltaics

  , ADVANCED ENERGY MATERIALS, Vol: 2, Pages: 260-265, ISSN: 1614-6832
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• Journal article
  Faist MA, Kirchartz T, Gong W, Ashraf RS, McCulloch I, de Mello JC, Ekins-Daukes NJ, Bradley DDC, Nelson Jet al., 2012,

  Competition between the Charge Transfer State and the Singlet States of Donor or Acceptor Limiting the Efficiency in Polymer:Fullerene Solar Cells

  , JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 134, Pages: 685-692, ISSN: 0002-7863
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  • Citations: 225
• Journal article
  Dimitrov SD, Nielsen CB, Shoaee S, Tuladhar PS, Du J, McCulloch I, Durrant JRet al., 2012,

  Efficient Charge Photogeneration by the Dissociation of PC70BM Excitons in Polymer/Fullerene Solar Cells

  , JOURNAL OF PHYSICAL CHEMISTRY LETTERS, Vol: 3, Pages: 140-144, ISSN: 1948-7185
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• Journal article
  Biniek L, Schroeder BC, Nielsen CB, McCulloch Iet al., 2012,

  Recent advances in high mobility donor-acceptor semiconducting polymers

  , JOURNAL OF MATERIALS CHEMISTRY, Vol: 22, Pages: 14803-14813, ISSN: 0959-9428
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• Journal article
  Nielsen CB, Ashraf RS, Schroeder BC, D'Angelo P, Watkins SE, Song K, Anthopoulos TD, McCulloch Iet al., 2012,

  Random benzotrithiophene-based donor-acceptor copolymers for efficient organic photovoltaic devices

  , CHEMICAL COMMUNICATIONS, Vol: 48, Pages: 5832-5834, ISSN: 1359-7345

  A series of benzotrithiophene-containing random terpolymers for polymer solar cells is reported. Through variations of the two other components in the terpolymers, the absorption profile and the frontier energy levels are optimized and maximum power conversion efficiencies are nearly doubled (5.14%) relative to the parent alternating copolymer.

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• Journal article
  Gupta D, Brenner TJK, Albert-Seifried S, Lee MJ, Heeney M, McCulloch I, Sirringhaus Het al., 2012,

  Photoconductivity anisotropy study in uniaxially aligned polymer based planar photodiodes

  , ORGANIC ELECTRONICS, Vol: 13, Pages: 36-42, ISSN: 1566-1199
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  • Citations: 12
• Conference paper
  Soon YW, Shoaee S, McCulloch I, Durrant JRet al., 2012,

  Correlating crystallinity and photophysics for donor polymers of interest for organic photovoltaic devices

  , Conference on Organic Photovoltaics XIII Part of the Symposium on Organic Photonics Plus Electronics at the SPIE Optics Plus Photonics International Meeting, Publisher: SPIE-INT SOC OPTICAL ENGINEERING, ISSN: 0277-786X
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• Journal article
  Shoaee S, Clarke TM, Eng MP, Huang C, Barlow S, Espildora E, Luis Delgado J, Campo B, Marder SR, Heeney M, McCulloch I, Martin N, Vanderzande D, Durrant JRet al., 2012,

  Charge photogeneration in donor/acceptor organic solar cells

  , JOURNAL OF PHOTONICS FOR ENERGY, Vol: 2, ISSN: 1947-7988
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  • Citations: 11
• Journal article
  Ashraf RS, Kronemeijer AJ, James DI, Sirringhaus H, McCulloch Iet al., 2012,

  A new thiophene substituted isoindigo based copolymer for high performance ambipolar transistors

  , CHEMICAL COMMUNICATIONS, Vol: 48, Pages: 3939-3941, ISSN: 1359-7345
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  • Citations: 226
• Journal article
  Shahid M, Ashraf RS, Huang Z, Kronemeijer AJ, McCarthy-Ward T, McCulloch I, Durrant JR, Sirringhaus H, Heeney Met al., 2012,

  Photovoltaic and field effect transistor performance of selenophene and thiophene diketopyrrolopyrrole co-polymers with dithienothiophene

  , JOURNAL OF MATERIALS CHEMISTRY, Vol: 22, Pages: 12817-12823, ISSN: 0959-9428
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  • Citations: 93
• Journal article
  Fei Z, Ashraf RS, Huang Z, Smith J, Kline RJ, D'Angelo P, Anthopoulos TD, Durrant JR, McCulloch I, Heeney Met al., 2012,

  Germaindacenodithiophene based low band gap polymers for organic solar cells

  , CHEMICAL COMMUNICATIONS, Vol: 48, Pages: 2955-2957, ISSN: 1359-7345
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  • Citations: 49
• Journal article
  James DT, Kjellander BKC, Smaal WTT, Gelinck GH, Combe C, McCulloch I, Wilson R, Burroughes JH, Bradley DDC, Kim J-Set al., 2011,

  Thin-Film Morphology of Inkjet-Printed Single-Droplet Organic Transistors Using Polarized Raman Spectroscopy: Effect of Blending TIPS-Pentacene with Insulating Polymer

  , ACS NANO, Vol: 5, Pages: 9824-9835, ISSN: 1936-0851
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  • Citations: 112

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