329 results found
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
Fei Z, Ashraf RS, Huang Z, et al., 2012, Germaindacenodithiophene based low band gap polymers for organic solar cells, CHEMICAL COMMUNICATIONS, Vol: 48, Pages: 2955-2957, ISSN: 1359-7345
Siram RBK, Smith J, Anthopoulos TD, et al., 2012, Acenaphtho[1,2-b]quinoxaline based low band gap copolymers for organic thin film transistor applications, JOURNAL OF MATERIALS CHEMISTRY, Vol: 22, Pages: 4450-4458, ISSN: 0959-9428
Ball JM, Wöbkenberg PH, Anthopoulos TD, 2012, Fullerene-based electronics, Advances in Carbon Nanomaterials: Science and Applications, Pages: 189-238, ISBN: 9789814267878
© 2012 Pan Stanford Publishing Pte. Ltd. The family of hollow ellipsoid fullerenes is an important and widely studied class of small molecule semiconducting materials used in various electronic devices. In this chapter, we will outline the electronic properties of fullerenes, their preparation in thin-films, and the physics of devices in which they are used. Furthermore, we will highlight important advances in the field of fullerenebased electronics and offer an outlook on future directions and challenges.
Fei Z, Shahid M, Yaacobi-Gross N, et al., 2012, Thiophene fluorination to enhance photovoltaic performance in low band gap donor-acceptor polymers, CHEMICAL COMMUNICATIONS, Vol: 48, Pages: 11130-11132, ISSN: 1359-7345
Nielsen CB, Ashraf RS, Schroeder BC, et 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.
Smith JN, Labram JG, Anthopoulos TD, 2012, Semiconducting Organic Molecule/Polymer Composites for Thin-Film Transistors, Semiconducting Polymer Composites, Publisher: Wiley-VCH Verlag GmbH & Co. KGaA, Pages: 219-249, ISBN: 9783527648689
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.
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.
Labram JG, Kirkpatrick J, Bradley DDC, et al., 2011, Impact of Fullerene Molecular Weight on P3HT:PCBM Microstructure Studied Using Organic Thin-Film Transistors, Adv. Energy Mater., Vol: 1, Pages: 1176-1183, ISSN: 1614-6840
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
Bronstein H, Ashraf RS, Kim Y, et al., 2011, Synthesis of a Novel Fused Thiophene-thieno[3,2-b]thiophene-thiophene Donor Monomer and Co-polymer for Use in OPV and OFETs, MACROMOLECULAR RAPID COMMUNICATIONS, Vol: 32, Pages: 1664-1668, ISSN: 1022-1336
Credgington D, Kim Y, Labram J, et al., 2011, Analysis of Recombination Losses in a Pentacene/C60 Organic Bilayer Solar Cell, The Journal of Physical Chemistry Letters, Vol: 2, Pages: 2759-2763, ISSN: 1948-7185
Zhang XR, Richter LJ, DeLongchamp DM, et al., 2011, Molecular Packing of High-Mobility Diketo Pyrrolo-Pyrrole Polymer Semiconductors with Branched Alkyl Side Chains, J AM CHEM SOC, Vol: 133, Pages: 15073-15084, ISSN: 0002-7863
Bronstein H, Leem DS, Hamilton R, et al., 2011, Indacenodithiophene-co-benzothiadiazole Copolymers for High Performance Solar Cells or Transistors via Alkyl Chain Optimization, MACROMOLECULES, Vol: 44, Pages: 6649-6652, ISSN: 0024-9297
Goetz KP, Li Z, Ward JW, et al., 2011, Effect of Acene Length on Electronic Properties in 5-, 6-, and 7-Ringed Heteroacenes, ADVANCED MATERIALS, Vol: 23, Pages: 3698-+, ISSN: 0935-9648
Labram JG, Kirkpatrick J, Bradley DDC, et al., 2011, Measurement of the diffusivity of fullerenes in polymers using bilayer organic field effect transistors, 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
Agostinelli T, Lilliu S, Labram JG, et al., 2011, Real-Time Investigation of Crystallization and Phase-Segregation Dynamics in P3HT:PCBM Solar Cells During Thermal Annealing, Adv. Funct. Mater., Vol: 21, Pages: 1701-1708, ISSN: 1616-3028
Woebkenberg PH, Eda G, Leem D-S, et al., 2011, Reduced Graphene Oxide Electrodes for Large Area Organic Electronics, ADVANCED MATERIALS, Vol: 23, Pages: 1558-1562, ISSN: 0935-9648
Adamopoulos G, Stuart T, Bradley DDC, et al., 2011, High-mobility low-voltage ZnO transistors based on ZrO2 high-kdielectric grown by spray pyrolysis in ambient air, Advanced Materials, 2011, Vol: 23
Adamopoulos G, Thomas S, Bradley DDC, et al., 2011, Low-voltage ZnO thin-film transistors based on Y2O3 and Al2O3 high-kdielectrics deposited by spray pyrolysis in air, Applied Physics letters, 2011, Vol: 98
We report the application of ambient spray pyrolysis for the deposition of high-k polycrystalline Y2O3 and amorphous Al2O3 dielectrics and their use in low-voltage ZnO thin-film transistors. The films are studied by means of atomic force microscopy, UV-visible absorption spectroscopy, impedance spectroscopy, and field-effect measurements. ZnO transistors based on spray pyrolysed Y2O3 and Al2O3 dielectrics show low leakage currents, low voltage 6 V , and hysteresis-free operation with a maximum electron mobility of 34 cm2 / V s and current on/off ratio on the order of 105. This work is a significant step toward high-performance oxide electronics manufactured using simple and scalable processing methods
Bronstein H, Chen Z, Ashraf RS, et al., 2011, Thieno[3,2-b]thiophene-Diketopyrrolopyrrole-Containing Polymers for High-Performance Organic Field-Effect Transistors and Organic Photovoltaic Devices, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 133, Pages: 3272-3275, ISSN: 0002-7863
Ashraf RS, Chen ZY, Leem DS, et al., 2011, Silaindacenodithiophene Semiconducting Polymers for Efficient Solar Cells and High-Mobility Ambipolar Transistors, CHEM MATER, Vol: 23, Pages: 768-770, ISSN: 0897-4756
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
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
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
Faist MA, Keivanidis PE, Foster S, et al., 2011, Effect of Multiple Adduct Fullerenes on Charge Generation and Transport in Photovoltaic Blends with Poly(3-hexylthiophene-2,5-diyl), JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, Vol: 49, Pages: 45-51, ISSN: 0887-6266
Eda G, Ball J, Mattevi C, et al., 2011, Partially oxidized graphene as a precursor to graphene, JOURNAL OF MATERIALS CHEMISTRY, Vol: 21, Pages: 11217-11223, ISSN: 0959-9428
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