Imperial College London

ProfessorMartinHeeney

Faculty of Natural SciencesDepartment of Chemistry

Professor of Organic Materials
 
 
 
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Contact

 

+44 (0)20 7594 1248m.heeney Website

 
 
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Location

 

401GMolecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Publication Type
Year
to

300 results found

Nuccio L, Willis M, Schulz L, Fratini S, Messina F, D'Amico M, Pratt FL, Lord JS, McKenzie I, Loth M, Purushothaman B, Anthony J, Heeney M, Wilson RM, Hernandez I, Cannas M, Sedlak K, Kreouzis T, Gillin WP, Bernhard C, Drew AJet al., 2013, Importance of Spin-Orbit Interaction for the Electron Spin Relaxation in Organic Semiconductors, PHYSICAL REVIEW LETTERS, Vol: 110, ISSN: 0031-9007

Journal article

Tsoi WC, Zhang W, Hollis JR, Suh M, Heeney M, McCulloch I, Kim J-Set al., 2013, In-situ monitoring of molecular vibrations of two organic semiconductors in photovoltaic blends and their impact on thin film morphology, Applied Physics Letters, Vol: 102, ISSN: 1077-3118

We report in-situ simultaneous monitoring of molecular vibrations of two components in organic photovoltaic blends using resonant Raman spectroscopy. Blend films were composed of a low bandgap copolymer thieno[3,2-b]thiophene-diketopyrrolopyrrole (DPPTTT) and (6,6)-phenyl-C71-butyric acid ester (PC 70BM). Changes in Raman spectra associated with crystallization processes of each component and their impact on thin film morphology were studied during thermal annealing and cooling processes. Transition temperatures to crystalline phases in blends were measured at ∼150 °C and ∼170 °C for DPPTTT and PC 70BM, respectively. Such phase changes lead to modifications in local chemical composition reducing relative Raman peak intensities (IPC70BM/IDPPTTT) from ∼0.4 in PC 70BM-rich domains to ∼0.15 in homogeneous areas.

Journal article

Himmelberger S, Dacuna J, Rivnay J, Jimison LH, McCarthy-Ward T, Heeney M, McCulloch I, Toney MF, Salleo Aet al., 2013, Effects of Confinement on Microstructure and Charge Transport in High Performance Semicrystalline Polymer Semiconductors, ADVANCED FUNCTIONAL MATERIALS, Vol: 23, Pages: 2091-2098, ISSN: 1616-301X

Journal article

Marshall J, Heeney MJ, Beavis P, 2013, Development of fully conjugated polymers containing benzocarborane, 245th National Spring Meeting of the American-Chemical-Society (ACS), Publisher: AMER CHEMICAL SOC, ISSN: 0065-7727

Conference paper

Zhong H, Li Z, Deledalle F, Fregoso EC, Shahid M, Fei Z, Nielsen CB, Yaacobi-Gross N, Rossbauer S, Anthopoulos TD, Durrant JR, Heeney Met al., 2013, Fused Dithienogermolodithiophene Low Band Gap Polymers for High-Performance Organic Solar Cells without Processing Additives, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 135, Pages: 2040-2043, ISSN: 0002-7863

Journal article

Fei Z, Gao X, Smith J, Pattanasattayavong P, Domingo EB, Stingelin N, Watkins SE, Anthopoulos TD, Kline RJ, Heeney Met al., 2013, Near Infrared Absorbing Soluble Poly(cyclopenta[2,1-b:3,4-b ']dithiophen-4-one)vinylene Polymers Exhibiting High Hole and Electron Mobilities in Ambient Air, CHEMISTRY OF MATERIALS, Vol: 25, Pages: 59-68, ISSN: 0897-4756

Journal article

Zhong H, Li Z, Buchaca-Domingo E, Rossbauer S, Watkins SE, Stingelin N, Anthopoulos TD, Heeney Met al., 2013, Low band gap dithienogermolodithiophene copolymers with tunable acceptors and side-chains for organic solar cells, JOURNAL OF MATERIALS CHEMISTRY A, Vol: 1, Pages: 14973-14981, ISSN: 2050-7488

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, ISSN: 2046-2069

Journal article

Westacott P, Tumbleston JR, Shoaee S, Fearn S, Bannock JH, Gilchrist JB, Heutz S, DeMello J, Heeney M, Ade H, Durrant J, McPhail DS, Stingelin Net al., 2013, On the role of intermixed phases in organic photovoltaic blends, Energy & Environmental Science, ISSN: 1754-5692

Journal article

Shahid M, Padamsey N, Labram J, Anthopoulos TD, Heeney Met al., 2013, Synthesis of tetraselenophenoporphyrazine and its application in transistor devices, Journal of Materials Chemistry C, Vol: 1, Pages: 6198-6201, ISSN: 2050-7526

We report the first synthesis of a soluble selenophene containing porphyrazine derivative, tetraselenophenoporphyrazine (SePz). Thin films of SePz exhibit a broad and strong absorption in the visible to near-IR region, which is red shifted compared to the thiophene analogue, and demonstrate p-type carrier mobilities of 10-2 cm2 V-1 s-1 in bottom gate, bottom contact field effect transistors.

Journal article

Bannock JH, Krishnadasan SH, Nightingale AM, Yau CP, Khaw K, Burkitt D, Halls JJM, Heeney H, de Mello JCet al., 2012, Continuous Synthesis of Device-Grade Semiconducting Polymers in Droplet-Based Microreactors, Advanced Functional Materials

A method is reported for the controlled synthesis of device-grade semiconducting polymers, utilizing a droplet-based microfluidic reactor. Using poly(3-hexylthiophene) (P3HT) as a test material, the reactor is shown to provide a controlled and stable environment for polymer synthesis, enabling control of molecular weight via tuning of flow conditions, reagent composition or temperature. Molecular weights of up to 92 000 Da are readily attainable, without leakage or reactor fouling. The method avoids the usual deterioration in materials quality that occurs when conventional batch syntheses are scaled from the sub-gram level to higher quantities, with a prototype five-channel reactor producing material of consistent molecular weight distribution and high regioregularity (>98%) at a rate of ≈60 g/day. The droplet-synthesized P3HT compares favorably with commercial material in terms of absorption spectrum, polydispersity, regioregularity, and crystallinity, yielding power conversion efficiencies of up to 4% in bulk heterojunction solar cells with [6,6]-phenyl-C61-butyric acid methyl ester.

Journal article

Miller NC, Cho E, Junk MJN, Gysel R, Risko C, Kim D, Sweetnam S, Miller CE, Richter LJ, Kline RJ, Heeney M, McCulloch I, Amassian A, Acevedo-Feliz D, Knox C, Hansen MR, Dudenko D, Chmelka BF, Toney MF, Bredas J-L, McGehee MDet al., 2012, Use of X-Ray Diffraction, Molecular Simulations, and Spectroscopy to Determine the Molecular Packing in a Polymer-Fullerene Bimolecular Crystal, ADVANCED MATERIALS, Vol: 24, Pages: 6071-+, ISSN: 0935-9648

Journal article

Tsoi WC, James DT, Domingo EB, Kim JS, Al-Hashimi M, Murphy CE, Stingelin N, Heeney M, Kim J-Set al., 2012, Effects of a Heavy Atom on Molecular Order and Morphology in Conjugated Polymer:Fullerene Photovoltaic Blend Thin Films and Devices, ACS NANO, Vol: 6, Pages: 9646-9656, ISSN: 1936-0851

Journal article

Miller NC, Cho E, Gysel R, Risko C, Coropceanu V, Miller CE, Sweetnam S, Sellinger A, Heeney M, McCulloch I, Bredas J-L, Toney MF, McGehee MDet al., 2012, Factors Governing Intercalation of Fullerenes and Other Small Molecules Between the Side Chains of Semiconducting Polymers Used in Solar Cells, ADVANCED ENERGY MATERIALS, Vol: 2, Pages: 1208-1217, ISSN: 1614-6832

Journal article

Treat ND, Varotto A, Takacs CJ, Batara N, Al-Hashimi M, Heeney MJ, Heeger AJ, Wudl F, Hawker CJ, Chabinyc MLet al., 2012, Polymer-Fullerene Miscibility: A Metric for Screening New Materials for High-Performance Organic Solar Cells, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 134, Pages: 15869-15879, ISSN: 0002-7863

Journal article

McGlashon A, Zhang W, Smilgies DM, Shkunov M, Genevicius K, Whitehead KS, Amassian A, Malliaras GG, Bradley DDC, Heeney M, Campbell AJet al., 2012, Spectroscopic and morphological investigation of conjugated photopolymerisable quinquethiophene liquid crystals, CURRENT APPLIED PHYSICS, Vol: 12, Pages: E59-E66, ISSN: 1567-1739

Journal article

Zhong H, Smith J, Rossbauer S, White AJP, Anthopoulos TD, Heeney Met al., 2012, Air-Stable and High-Mobility n-Channel Organic Transistors Based on Small-Molecule/Polymer Semiconducting Blends, ADVANCED MATERIALS, Vol: 24, Pages: 3205-3211, ISSN: 0935-9648

Journal article

Smith J, Zhang W, Sougrat R, Zhao K, Li R, Cha D, Amassian A, Heeney M, McCulloch I, Anthopoulos TDet al., 2012, Solution-Processed Small Molecule-Polymer Blend Organic Thin-Film Transistors with Hole Mobility Greater than 5 cm2/Vs, ADVANCED MATERIALS, Vol: 24, Pages: 2441-2446, ISSN: 0935-9648

Journal article

Kronemeijer AJ, Gili E, Shahid M, Rivnay J, Salleo A, Heeney M, Sirringhaus Het al., 2012, A Selenophene-Based Low-Bandgap Donor-Acceptor Polymer Leading to Fast Ambipolar Logic, ADVANCED MATERIALS, Vol: 24, Pages: 1558-1565, ISSN: 0935-9648

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.

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

Journal article

James DI, Smith J, Heeney M, Anthopoulos TD, Salleo A, McCulloch Iet al., 2012, Organic Semiconductor Materials for Transistors, Pages: 1-26

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

Journal article

Xia R, Al-Hashimi M, Tsoi WC, Heeney M, Bradley DDC, Nelson Jet al., 2012, Fused pyrrolo[3,2-d:4,5-d ']bisthiazole-containing polymers for using in high-performance organic bulk heterojunction solar cells, SOLAR ENERGY MATERIALS AND SOLAR CELLS, Vol: 96, Pages: 112-116, ISSN: 0927-0248

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

Journal article

Kronemeijer AJ, Gili E, Shahid M, Rivnay J, Salleo A, Heeney M, Sirringhaus Het al., 2012, High-Mobility Ambipolar Transistors: Properties and Function, ORGANIC FIELD-EFFECT TRANSISTORS XI, Vol: 8478, ISSN: 0277-786X

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

Journal article

Fei Z, Shahid M, Yaacobi-Gross N, Rossbauer S, Zhong H, Watkins SE, Anthopoulos TD, Heeney Met 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

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

Journal article

Kim JS, Fei Z, James DT, Heeney M, Kim J-Set al., 2012, A comparison between dithienosilole and dithienogermole donor-acceptor type co-polymers for organic bulk heterojunction photovoltaic devices, JOURNAL OF MATERIALS CHEMISTRY, Vol: 22, Pages: 9975-9982, ISSN: 0959-9428

Journal article

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