Publications
641 results found
Brabec CJ, Mcculloch I, Nelson J, 2010, Determination and Control of Microstructure in Organic Photovoltaic Devices, Functional Supramolecular Architectures: For Organic Electronics and Nanotechnology, Pages: 827-860, ISBN: 9783527326112
Arias AC, MacKenzie JD, McCulloch I, et al., 2010, Materials and Applications for Large Area Electronics: Solution-Based Approaches, CHEMICAL REVIEWS, Vol: 110, Pages: 3-24, ISSN: 0009-2665
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- Citations: 1531
Baklar M, Barard S, Sparrowe D, et al., 2010, Bulk charge transport in liquid-crystalline polymer semiconductors based on poly(2,5-bis(3-alkylthiophen-2-yl)thieno[3,2-<i>b</i>]thiophene), POLYMER CHEMISTRY, Vol: 1, Pages: 1448-1452, ISSN: 1759-9954
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- Citations: 9
Baklar M, Woebkenberg PH, Sparrowe D, et al., 2010, Ink-jet printed p-type polymer electronics based on liquid-crystalline polymer semiconductors, JOURNAL OF MATERIALS CHEMISTRY, Vol: 20, Pages: 1927-1931, ISSN: 0959-9428
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- Citations: 36
Smith J, Hamilton R, McCulloch I, et al., 2010, Solution-processed organic transistors based on semiconducting blends, JOURNAL OF MATERIALS CHEMISTRY, Vol: 20, Pages: 2562-2574, ISSN: 0959-9428
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- Citations: 188
Hallam T, Lee M, Zhao N, et al., 2009, Local Charge Trapping in Conjugated Polymers Resolved by Scanning Kelvin Probe Microscopy, PHYSICAL REVIEW LETTERS, Vol: 103, ISSN: 0031-9007
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- Citations: 59
McGehee MD, Mayer AC, Toney MF, et al., 2009, Bimolecular crystals and intercalated molecular structures of polymer/fullerene in bulk heterojunction solar cells, ACS National Meeting Book of Abstracts, ISSN: 0065-7727
The performance of polymer:fullerene solar cells is heavily influenced by the packing and ordering at the molecular level in the blends as the local packing determines the stability, carrier recombination dynamics, and charge transport properties of these blends. We use x-ray diffraction, ambipolar charge transport measurements, and optical microscopy to demonstrate the formation of stable well-ordered bimolecular crystals of fullerene intercalated between the side-chains of the semiconducting polymer poly(2,5-bis(3-tetradecylthiophen-2-yl)thieno[3,2-b]thiophene (pBTTT). We show that fullerene intercalation is general and is likely to occur in blends with both amorphous and semicrystalline polymers when there is enough free volume between the side-chains to accommodate the fullerene molecule. These findings offer explanations for why luminescence is completely quenched in crystals much larger than exciton diffusion lengths, how the hole mobility of poly(2-methoxy-5-(3′,7′-dimethyloxy)-p-phylene vinylene) (MDMO-PPV) increases by over 2 orders of magnitude when blended with fullerene derivatives, and why large-scale phase separation occurs in some polymer:fullerene blend ratios while thermodynamically stable mixing on the molecular scale occurs for others, and finally what determines the optimum polymer:fullerene blending ratios.
Salleo A, Jimison LH, Rivnay J, et al., 2009, Relating microstructure to transport in organic semiconductor transistors
Cates NC, Gysel R, Beiley Z, et al., 2009, Tuning the Properties of Polymer Bulk Heterojunction Solar Cells by Adjusting Fullerene Size to Control Intercalation, NANO LETTERS, Vol: 9, Pages: 4153-4157, ISSN: 1530-6984
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- Citations: 233
Smith J, Hamilton R, McCulloch I, et al., 2009, High mobility p-channel organic field effect transistors on flexible substrates using a polymer-small molecule blend, SYNTHETIC METALS, Vol: 159, Pages: 2365-2367, ISSN: 0379-6779
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- Citations: 58
Zhao N, Noh Y-Y, Chang J-F, et al., 2009, Polaron Localization at Interfaces in High-Mobility Microcrystalline Conjugated Polymers, ADVANCED MATERIALS, Vol: 21, Pages: 3759-3763, ISSN: 0935-9648
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- Citations: 94
Ball JM, Woebkenberg PH, Colleaux F, et al., 2009, Solution processed low-voltage organic transistors and complementary inverters, APPLIED PHYSICS LETTERS, Vol: 95, ISSN: 0003-6951
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- Citations: 25
Kim Y, Nelson J, Zhang T, et al., 2009, Distorted Asymmetric Cubic Nanostructure of Soluble Fullerene Crystals in Efficient Polymer:Fullerene Solar Cells, ACS NANO, Vol: 3, Pages: 2557-2562, ISSN: 1936-0851
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- Citations: 64
Heeney M, Al-Hashimi M, McCulloch I, et al., 2009, Structural and optoelectronic effects of chalcogen atom manipulation on low bandgap polymers, ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol: 238, ISSN: 0065-7727
Cates NC, Gysel R, Beiley Z, et al., 2009, Intercalation in polymer-molecule blends, ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol: 238, ISSN: 0065-7727
Zhang W, Smith J, Hamilton R, et al., 2009, Systematic Improvement in Charge Carrier Mobility of Air Stable Triarylamine Copolymers, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 131, Pages: 10814-+, ISSN: 0002-7863
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- Citations: 165
McCulloch I, Heeney M, 2009, Thienothiophene Copolymers in Field Effect Transistors, Pages: 647-672
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- Citations: 1
Koppe M, Brabec CJ, Heiml S, et al., 2009, Influence of Molecular Weight Distribution on the Gelation of P3HT and Its Impact on the Photovoltaic Performance, MACROMOLECULES, Vol: 42, Pages: 4661-4666, ISSN: 0024-9297
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- Citations: 141
Kao CY, Lee B, Wielunski LS, et al., 2009, Doping of Conjugated Polythiophenes with Alkyl Silanes, ADV FUNCT MATER, Vol: 19, Pages: 1906-1911, ISSN: 1616-301X
A strong modification of the electronic properties of solution-processable conjugated polythiophenes by self-assembled silane molecules is reported. Upon bulk doping with hydrolized fluoroalkyl trichlorosilane, the electrical conductivity of ultrathin polythiophene films increases by upon to six orders of cm(-1) for poly(2,5-bis(3-tetradecylthiophen-2-yl)thieno[3,2-b]thiophene) (PBTTT) and 50 +/- 20 S cm(-1) for poly(3-hexyl)thiophene (P3HT). Interband optical absorption of the polymers in the doped state is drastically reduced, making these highly conductive films transparent in the visible range. The dopants within the porous polymer matrix are partially crosslinked via a silane self-polymerization mechanism that makes the samples very stable in vacuum and nonpolar environments. The mechanism of SAM-induced conductivity is believed to be based on protonic doping by the free silanol groups available within the partially crosslinked SAM network incorporated in the polythiophene structure. The SAM-doped polythiophenes exhibit an intrinsic sensing effect: a drastic and reversible change in conductivity in response to ambient polar molecules, which is believed to be due to the interaction of the silanol groups with polar analytes. The reported electronic effects point to a new attractive route for doping conjugated polymers with potential applications in transparent conductors and molecular sensors.
Chen H-L, Hou J, McCulloch I, et al., 2009, SPECIAL ISSUE ON FLEXIBLE ELECTRONICS AND DISPLAYS, JOURNAL OF DISPLAY TECHNOLOGY, Vol: 5, Pages: 169-171, ISSN: 1551-319X
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- Citations: 7
Jimison LH, Toney MF, McCulloch I, et al., 2009, Charge-Transport Anisotropy Due to Grain Boundaries in Directionally Crystallized Thin Films of Regioregular Poly(3-hexylthiophene), ADVANCED MATERIALS, Vol: 21, Pages: 1568-+, ISSN: 0935-9648
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- Citations: 297
James M, McCulloch I, Duffy W, et al., 2009, Conducting formulation, WO 2009049744
The invention relates to novel formulations comprising an org. semiconductor (OSC) and a conductive additive, to their use as conducting inks for the prepn. of org. electronic (OE) devices, esp. org. photovoltaic (OPV) cells, to methods for prepg. OE devices using the novel formulations, and to OE devices and OPV cells prepd. from such methods and formulations.
Mayer AC, Toney MF, Scully SR, et al., 2009, Bimolecular Crystals of Fullerenes in Conjugated Polymers and the Implications of Molecular Mixing for Solar Cells, ADVANCED FUNCTIONAL MATERIALS, Vol: 19, Pages: 1173-1179, ISSN: 1616-301X
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- Citations: 372
DeLongchamp DM, Kline RJ, Jung Y, et al., 2009, Controlling the Orientation of Terraced Nanoscale "Ribbons" of a Poly(thiophene) Semiconductor, ACS NANO, Vol: 3, Pages: 780-787, ISSN: 1936-0851
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- Citations: 157
Bjorklund N, Lill J-O, Rajander J, et al., 2009, The effects of metal impurities in poly[(2,5-bis(3-decylthiophen-2-yl)thieno[2,3-b]thiophene] on field-effect transistor properties, ORGANIC ELECTRONICS, Vol: 10, Pages: 215-221, ISSN: 1566-1199
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- Citations: 7
McGehee MD, Mayer AC, Toney MF, et al., 2009, PHYS 240-Bimolecular crystals and intercalated molecular structures of polymer/fullerene in bulk heterojunction solar cells, ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol: 237, ISSN: 0065-7727
McCulloch I, Heeney M, Chabinyc ML, et al., 2009, Semiconducting Thienothiophene Copolymers: Design, Synthesis, Morphology, and Performance in Thin-Film Organic Transistors, ADVANCED MATERIALS, Vol: 21, Pages: 1091-1109, ISSN: 0935-9648
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- Citations: 376
Hamilton R, Smith J, Ogier S, et al., 2009, High-Performance Polymer-Small Molecule Blend Organic Transistors, ADVANCED MATERIALS, Vol: 21, Pages: 1166-1171, ISSN: 0935-9648
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- Citations: 329
Brocorens P, Van Vooren A, Chabinyc ML, et al., 2009, Solid-State Supramolecular Organization of Polythiophene Chains Containing Thienothiophene Units, ADVANCED MATERIALS, Vol: 21, Pages: 1193-1198, ISSN: 0935-9648
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- Citations: 71
Barard S, Heeney M, Chen L, et al., 2009, Separate charge transport pathways determined by the time of flight method in bimodal polytriarylamine, JOURNAL OF APPLIED PHYSICS, Vol: 105, ISSN: 0021-8979
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- Citations: 29
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