Publications
228 results found
Noor-Evans F, Peters S, Stingelin N, 2012, Nanotechnology innovation for future development in the textile industry, NEW PRODUCT DEVELOPMENT IN TEXTILES, Editors: Horne, Publisher: WOODHEAD PUBL LTD, Pages: 109-131, ISBN: 978-1-84569-538-5
Gui K, Mutkins K, Schwenn PE, et al., 2012, A flexible n-type organic semiconductor for optoelectronics, JOURNAL OF MATERIALS CHEMISTRY, Vol: 22, Pages: 1800-1806, ISSN: 0959-9428
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- Citations: 26
Jamieson FC, Domingo EB, McCarthy-Ward T, et al., 2012, Fullerene crystallisation as a key driver of charge separation in polymer/fullerene bulk heterojunction solar cells, Chemical Science, Vol: 3, Pages: 485-492, ISSN: 2041-6520
Solution processed polymer/fullerene blend films are receiving extensive attention as the photoactive layer of organic solar cells. In this paper we report a range of photophysical, electrochemical, physicochemical and structural data which provide evidence that formation of a relatively pure, molecularly ordered phase of the fullerene component, phenyl-C61-butyric acid methyl ester (PCBM), may be the key factor driving the spatial separation of photogenerated electrons and holes in many of these devices. PCBM crystallisation is shown to result in an increase in its electron affinity, providing an energetic driving force for spatial separation of electrons and holes. Based upon our observations, we propose a functional model applicable to many organic bulk heterojunction devices based upon charge generation in a finely intermixed polymer/fullerene phase followed by spatial separation of electrons and holes at the interface of this mixed phase with crystalline PCBM domains. This model has significant implications for the design of alternative acceptor materials to PCBM for organic solar cells.
Fei Z, Kim Y, Smith J, et al., 2012, Comparative Optoelectronic Study between Copolymers of Peripherally Alkylated Dithienosilole and Dithienogermole, Macromolecules
Here we report a simple methodology for the synthesis of dithienosilole and dithienogermole monomers in which the necessary solubilizing long chain alkyl groups are incorporated into the peripheral 3,5-positions of the fused ring. We report four novel monomers in which methyl or butyl groups are attached to the bridging Si and Ge atom. Copolymers with bithiophene were synthesized by a Stille polymerization in high molecular weight. We report the optical, electrical, electrochemical and morphological properties of the resulting polymers. We find that the nature of the bridging heteroatom (Si or Ge) has only a minor influence on these properties, whereas the nature of the alkyl chain attached to the bridging atom is found to have a much larger effect.
Shahid M, McCarthy-Ward T, Labram J, et al., 2012, Low band gap selenophene-diketopyrrolopyrrole polymers exhibiting high and balanced ambipolar performance in bottom-gate transistors, Chemical Science, Vol: 3, Pages: 181-185, ISSN: 2041-6520
We report the synthesis of a selenophene-diketopyrrolopyrrole monomer and its co-polymerisation with selenophene and thieno[3,2-b]thiophene monomers by Stille coupling. The resulting low band gap polymers exhibit ambipolar charge transport in organic field effect transistors. High and balanced electron and hole mobilities in excess of 0.1 cm2 V-1 s-1 were observed in bottom-gate, bottom-contact devices, suggesting that selenophene inclusion is a promising strategy for the development of ambipolar organic semiconductors.
Yu L, Li X, Smith J, et al., 2012, Solution-processed small molecule transistors with low operating voltages and high grain-boundary anisotropy, JOURNAL OF MATERIALS CHEMISTRY, Vol: 22, Pages: 9458-9461, ISSN: 0959-9428
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- Citations: 20
Yu L, Li X, Pavlica E, et al., 2011, Single-step solution processing of small-molecule organic semiconductor field-effect transistors at high yield, APPLIED PHYSICS LETTERS, Vol: 99, ISSN: 0003-6951
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- Citations: 13
Wolfer P, Santarelli ML, Vaccaro L, et al., 2011, Semiconducting arylacetylene: Insulating polymer blends for organic-based electronic devices, Pages: 1-6, ISSN: 0272-9172
In this contribution we have reported about bi-component blends of readily accessible semiconducting molecular arylacetylenes with insulating high-density polyethylene (HDPE) and poly(vinylidene fluoride) (PVDF) that may exhibit electronic characteristics comparable to those of the neat semiconductors, as measured in field-effect transistors (FETs). © 2012 Materials Research Society.
Murphy CE, Yang L, Ray S, et al., 2011, Wire-bar coating of semiconducting polythiophene/insulating polyethylene blend thin films for organic transistors, JOURNAL OF APPLIED PHYSICS, Vol: 110, ISSN: 0021-8979
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- Citations: 39
Wolfer P, Santarelli ML, Vaccaro L, et al., 2011, Influence of molecular architecture and processing on properties of semiconducting arylacetylene: Insulating poly(vinylidene fluoride) blends, ORGANIC ELECTRONICS, Vol: 12, Pages: 1886-1892, ISSN: 1566-1199
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- Citations: 20
Agostinelli T, Ferenczi TAM, Pires E, et al., 2011, The Role of Alkane Dithiols in Controlling Polymer Crystallization in Small Band Gap Polymer:Fullerene Solar Cells (vol 49, pg 717, 2011), JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, Vol: 49, Pages: 1345-1345, ISSN: 0887-6266
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- Citations: 2
Ferenczi TAM, Mueller C, Bradley DDC, et al., 2011, Organic Semiconductor: Insulator Polymer Ternary Blends for Photovoltaics, ADVANCED MATERIALS, Vol: 23, Pages: 4093-+, ISSN: 0935-9648
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- Citations: 76
Rumbles G, Stingelin N, Silva C, et al., 2011, Photogenerated charges in neat poly(3-hexylthiophene) flms, 242nd National Meeting of the American-Chemical-Society (ACS), Publisher: AMER CHEMICAL SOC, ISSN: 0065-7727
Silva C, Paquin F, Latini G, et al., 2011, Mechanism of charge generation by photoexcitation of semicrystalline semiconductor polymers, 242nd National Meeting of the American-Chemical-Society (ACS), Publisher: AMER CHEMICAL SOC, ISSN: 0065-7727
Schulz L, Willis M, Nuccio L, et al., 2011, Importance of intramolecular electron spin relaxation in small molecule semiconductors, PRB, Vol: 84
Al-Hashimi M, Baklar MA, Colleaux F, et al., 2011, Synthesis, Characterization, and Field Effect Transistor Properties of Regioregular Poly(3-alkyl-2,5-selenylenevinylene), MACROMOLECULES, Vol: 44, Pages: 5194-5199, ISSN: 0024-9297
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- Citations: 42
Asadi K, Wondergem HJ, Moghaddam RS, et al., 2011, Spinodal Decomposition of Blends of Semiconducting and Ferroelectric Polymers, ADVANCED FUNCTIONAL MATERIALS, Vol: 21, Pages: 1887-1894, ISSN: 1616-301X
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- Citations: 52
Agostinelli T, Ferenczi TAM, Pires E, et al., 2011, The Role of Alkane Dithiols in Controlling Polymer Crystallization in Small Band Gap Polymer:Fullerene Solar Cells, JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, Vol: 49, Pages: 717-724, ISSN: 0887-6266
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- Citations: 74
Paquin F, Latini G, Sakowicz M, et al., 2011, Charge Separation in Semicrystalline Polymeric Semiconductors by Photoexcitation: Is the Mechanism Intrinsic or Extrinsic?, PHYSICAL REVIEW LETTERS, Vol: 106, ISSN: 0031-9007
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- Citations: 114
Mueller C, Zhigadlo ND, Kumar A, et al., 2011, Enhanced Charge-Carrier Mobility in High-Pressure-Crystallized Poly(3-hexylthiophene), MACROMOLECULES, Vol: 44, Pages: 1221-1225, ISSN: 0024-9297
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- Citations: 56
Adamopoulos G, Bashir A, Gillin WP, et al., 2011, Structural and Electrical Characterization of ZnO Films Grown by Spray Pyrolysis and Their Application in Thin-Film Transistors, ADVANCED FUNCTIONAL MATERIALS, Vol: 21, Pages: 525-531, ISSN: 1616-301X
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- Citations: 97
Labram JG, Domingo EB, Stingelin N, et al., 2011, In-Situ Monitoring of the Solid-State Microstructure Evolution of Polymer:Fullerene Blend Films Using Field-Effect Transistors, Adv. Funct. Mater., Vol: 21, Pages: 356-363, ISSN: 1616-3028
Downing J, Ryan MP, Stingelin N, et al., 2011, Solution Processed Hybrid Photovoltaics - The Preparation of a Standard ZnO Template, Journal of Photonics for Energy, 2011, Vol: 1
The formation of a well-defined, reproducible ZnO nanorod scaffolds for hybrid photovoltaic (h-PV) applications has been investigated. A standard hydrothermal growth method was used and the influence of chemical additions in controlling length, width, density and orientation was studied. The nanostructures prepared have been characterised by scanning electron microscopy, X-ray diffraction, UV-Vis spectroscopy in addition to measurement of the wetting behaviour. A standard procedure for the production of vertically orientated nanorods with a narrow size distribution, high areal density and good wettability in aqueous solutions is presented.
Smith J, Heeney M, McCulloch I, et al., 2011, Percolation behaviour in high mobility p-channel polymer/small-molecule blend organic field-effect transistors, ORGANIC ELECTRONICS, Vol: 12, Pages: 143-147, ISSN: 1566-1199
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- Citations: 42
Nuccio L, Schulz L, Willis M, et al., 2011, Electron spin relaxation in organic semiconductors probed through μSR, International Conference on Trends in Spintronics and Nanomagnetism (TSN), Publisher: IOP PUBLISHING LTD, ISSN: 1742-6588
Fei Z, Kim JS, Smith J, et al., 2011, A low band gap co-polymer of dithienogermole and 2,1,3-benzothiadiazole by Suzuki polycondensation and its application in transistor and photovoltaic cells, JOURNAL OF MATERIALS CHEMISTRY, Vol: 21, Pages: 16257-16263, ISSN: 0959-9428
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- Citations: 85
Wolfer P, Audorff H, Kreger K, et al., 2011, Photo-induced molecular alignment of trisazobenzene derivatives, JOURNAL OF MATERIALS CHEMISTRY, Vol: 21, Pages: 4339-4345, ISSN: 0959-9428
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- Citations: 16
Ball JM, Bouwer RKM, Kooistra FB, et al., 2011, Soluble fullerene derivatives: The effect of electronic structure on transistor performance and air stability, Journal of Applied Physics, Vol: 110, Pages: 014506-014506
Adamopoulos G, Bashir A, Thomas S, et al., 2010, Spray-Deposited Li-Doped ZnO Transistors with Electron Mobility Exceeding 50 cm<SUP>2</SUP>/Vs, ADVANCED MATERIALS, Vol: 22, Pages: 4764-+, ISSN: 0935-9648
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- Citations: 106
Asadi K, Li M, Stingelin N, et al., 2010, Crossbar memory array of organic bistable rectifying diodes for nonvolatile data storage, APPLIED PHYSICS LETTERS, Vol: 97, ISSN: 0003-6951
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- Citations: 50
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