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Journal articleKettle J, Horie M, Majewski LA, et al., 2011,
Optimisation of PCPDTBT solar cells using polymer synthesis with Suzuki coupling
, SOLAR ENERGY MATERIALS AND SOLAR CELLS, Vol: 95, Pages: 2186-2193, ISSN: 0927-0248- Author Web Link
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- Citations: 66
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Journal articleCredgington D, Hamilton R, Atienzar P, et al., 2011,
Non-Geminate Recombination as the Primary Determinant of Open-Circuit Voltage in Polythiophene:Fullerene Blend Solar Cells: an Analysis of the Influence of Device Processing Conditions
, ADVANCED FUNCTIONAL MATERIALS, Vol: 21, Pages: 2744-2753, ISSN: 1616-301X- Author Web Link
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- Citations: 138
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Journal articleTsoi WC, James DT, Kim JS, et al., 2011,
The Nature of In-Plane Skeleton Raman Modes of P3HT and Their Correlation to the Degree of Molecular Order in P3HT:PCBM Blend Thin Films
, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 133, Pages: 9834-9843, ISSN: 0002-7863- Author Web Link
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- Citations: 317
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Journal articleMawyin J, Shupyk I, Wang M, et al., 2011,
Hybrid Heterojunction Nanorods for Nanoscale Controlled Morphology in Bulk Heterojunction Solar Cells
, JOURNAL OF PHYSICAL CHEMISTRY C, Vol: 115, Pages: 10881-10888, ISSN: 1932-7447- Author Web Link
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- Citations: 34
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Journal articleMacKenzie RCI, Kirchartz T, Dibb GFA, et al., 2011,
Modeling Nongeminate Recombination in P3HT:PCBM Solar Cells
, JOURNAL OF PHYSICAL CHEMISTRY C, Vol: 115, Pages: 9806-9813, ISSN: 1932-7447- Author Web Link
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- Citations: 180
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Journal articleAgostinelli 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- Author Web Link
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- Citations: 74
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Journal articleAgostinelli 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 -
Journal articleLilliu S, Agostinelli T, Pires E, et al., 2011,
Dynamics of Crystallization and Disorder during Annealing of P3HT/PCBM Bulk Heterojunctions
, MACROMOLECULES, Vol: 44, Pages: 2725-2734, ISSN: 0024-9297- Author Web Link
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- Citations: 182
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Journal articleTsoi WC, Spencer SJ, Yang L, et al., 2011,
Effect of Crystallization on the Electronic Energy Levels and Thin Film Morphology of P3HT:PCBM Blends
, MACROMOLECULES, Vol: 44, Pages: 2944-2952, ISSN: 0024-9297- Author Web Link
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- Citations: 220
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Journal articleMaurano A, Shuttle CC, Hamilton R, et al., 2011,
Transient Optoelectronic Analysis of Charge Carrier Losses in a Selenophene/Fullerene Blend Solar Cell
, JOURNAL OF PHYSICAL CHEMISTRY C, Vol: 115, Pages: 5947-5957, ISSN: 1932-7447- Author Web Link
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- Citations: 152
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Journal articleKirchartz T, Pieters BE, Kirkpatrick J, et al., 2011,
Recombination via tail states in polythiophene: fullerene solar cells
, PHYSICAL REVIEW B, Vol: 83, ISSN: 1098-0121- Author Web Link
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- Citations: 325
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Journal articleVoigt MM, Mackenzie RCI, Yau CP, et al., 2011,
Gravure printing for three subsequent solar cell layers of inverted structures on flexible substrates
, SOLAR ENERGY MATERIALS AND SOLAR CELLS, Vol: 95, Pages: 731-734, ISSN: 0927-0248- Author Web Link
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- Citations: 95
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Journal articleFaist 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- Author Web Link
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- Citations: 56
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Journal articleBall 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 -
Journal articleSoon YW, Clarke TM, Zhang W, et al., 2011,
Energy versus electron transfer in organic solar cells: a comparison of the photophysics of two indenofluorene: fullerene blend films
, Chemical Science, Vol: 2, Pages: 1111-1120, ISSN: 2041-6520In this paper, we compare the photophysics and photovoltaic device performance of two indenofluorene based polymers: poly[2,8-(6,6,12,12-tetraoctylindenofluorene)-co-4,7-(2,1,3-benzothiodiazole] (IF8BT) and poly[2,8-(6,6,12,12-tetraoctylindenofluorene)-co-5,5-(4[prime or minute],7[prime or minute]-di-2-thienyl-2[prime or minute],1[prime or minute],3[prime or minute]-benzothiodiazole] (IF8TBTT) blended with [6,6]-phenyl C61 butyric acid methyl ester (PCBM). Photovoltaic devices made with IF8TBTT exhibit greatly superior photocurrent generation and photovoltaic efficiency compared to those made with IF8BT. The poor device efficiency of IF8BT/PCBM devices is shown to result from efficient, ultrafast singlet Forster energy transfer from IF8BT to PCBM, with the resultant PCBM singlet exciton lacking sufficient energy to drive charge photogeneration. The higher photocurrent generation observed for IF8TBTT/PCBM devices is shown to result from IF8TBTT's relatively weak, red-shifted photoluminescence characteristics, which switches off the polymer to fullerene singlet energy transfer pathway. As a consequence, IF8TBTT singlet excitons are able to drive charge separation at the polymer/fullerene interface, resulting in efficient photocurrent generation. These results are discussed in terms of the impact of donor/acceptor energy transfer upon photophysics and energetics of charge photogeneration in organic photovoltaic devices. The relevance of these results to the design of polymers for organic photovoltaic applications is also discussed, particularly with regard to explaining why highly luminescent polymers developed for organic light emitting diode applications often give relatively poor performance in organic photovoltaic devices.
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Journal articleBrabec CJ, Heeney M, McCulloch I, et al., 2011,
Influence of blend microstructure on bulk heterojunction organic photovoltaic performance
, CHEMICAL SOCIETY REVIEWS, Vol: 40, Pages: 1185-1199, ISSN: 0306-0012- Author Web Link
- Open Access Link
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- Citations: 483
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Journal articleClarke TM, Ballantyne A, Shoaee S, et al., 2010,
Analysis of Charge Photogeneration as a Key Determinant of Photocurrent Density in Polymer: Fullerene Solar Cells
, Adv. Mater., Vol: 22, Pages: 5287-5291, ISSN: 1521-4095 -
Journal articleKeivanidis PE, Kamm V, Dyer-Smith C, et al., 2010,
Delayed Luminescence Spectroscopy of Organic Photovoltaic Binary Blend Films: Probing the Emissive Non-geminate Charge Recombination
, ADVANCED MATERIALS, Vol: 22, Pages: 5183-+, ISSN: 0935-9648- Author Web Link
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- Citations: 24
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Journal articleMaurano A, Hamilton R, Shuttle CG, et al., 2010,
Recombination Dynamics as a Key Determinant of Open Circuit Voltage in Organic Bulk Heterojunction Solar Cells: A Comparison of Four Different Donor Polymers
, ADVANCED MATERIALS, Vol: 22, Pages: 4987-+, ISSN: 0935-9648- Author Web Link
- Open Access Link
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- Citations: 348
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Journal articleJamieson FC, Agostinelli T, Azimi H, et al., 2010,
Field-Independent Charge Photogeneration in PCPDTBT/PC70BM Solar Cells
, The Journal of Physical Chemistry Letters, Vol: 1, Pages: 3306-3310, ISSN: 1948-7185 -
Journal articleShuttle CG, Hamilton R, O'Regan BC, et al., 2010,
Charge-density-based analysis of the current-voltage response of polythiophene/fullerene photovoltaic devices
, PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, Vol: 107, Pages: 16448-16452, ISSN: 0027-8424- Author Web Link
- Open Access Link
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- Citations: 246
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Journal articleDyer-Smith C, Reynolds LX, Bruno A, et al., 2010,
Triplet Formation in Fullerene Multi-Adduct Blends for Organic Solar Cells and Its Influence on Device Performance
, ADVANCED FUNCTIONAL MATERIALS, Vol: 20, Pages: 2701-2708, ISSN: 1616-301X- Author Web Link
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- Citations: 45
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Journal articleSaid AJ, Poize G, Martini C, et al., 2010,
Hybrid Bulk Heterojunction Solar Cells Based on P3HT and Porphyrin-Modified ZnO Nanorods
, JOURNAL OF PHYSICAL CHEMISTRY C, Vol: 114, Pages: 11273-11278, ISSN: 1932-7447- Author Web Link
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- Citations: 95
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Journal articleClarke TM, Ballantyne AM, Tierney S, et al., 2010,
Charge Photogeneration in Low Band Gap Polyselenophene/Fullerene Blend Films
, JOURNAL OF PHYSICAL CHEMISTRY C, Vol: 114, Pages: 8068-8075, ISSN: 1932-7447- Author Web Link
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- Citations: 58
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Journal articleHamilton R, Shuttle CG, O'Regan B, et al., 2010,
Recombination in Annealed and Nonannealed Polythiophene/Fullerene Solar Cells: Transient Photovoltage Studies versus Numerical Modeling
, JOURNAL OF PHYSICAL CHEMISTRY LETTERS, Vol: 1, Pages: 1432-1436, ISSN: 1948-7185- Author Web Link
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- Citations: 142
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Journal articleHorie M, Shen I-W, Tuladhar SM, et al., 2010,
Poly(thienylenevinylene) prepared by ring-opening metathesis polymerization: Performance as a donor in bulk heterojunction organic photovoltaic devices
, POLYMER, Vol: 51, Pages: 1541-1547, ISSN: 0032-3861- Author Web Link
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- Citations: 23
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Journal articleHaque SA, Nelson J, 2010,
Toward Organic All-Optical Switching
, SCIENCE, Vol: 327, Pages: 1466-1467, ISSN: 0036-8075- Author Web Link
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- Citations: 52
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Journal articleShuttle CG, Hamilton R, Nelson J, et al., 2010,
Measurement of Charge-Density Dependence of Carrier Mobility in an Organic Semiconductor Blend
, ADVANCED FUNCTIONAL MATERIALS, Vol: 20, Pages: 698-702, ISSN: 1616-301X- Author Web Link
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- Citations: 147
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Journal articleWoebkenberg PH, Ishwara T, Nelson J, et al., 2010,
TiO<sub>2</sub> thin-film transistors fabricated by spray pyrolysis
, APPLIED PHYSICS LETTERS, Vol: 96, ISSN: 0003-6951- Author Web Link
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- Citations: 51
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Journal articleKeivanidis PE, Clarke TM, Lilliu S, et al., 2010,
Dependence of Charge Separation Efficiency on Film Microstructure in Poly(3-hexylthiophene-2,5-diyl): [6,6]-Phenyl-C<sub>61</sub> Butyric Acid Methyl Ester Blend Films
, JOURNAL OF PHYSICAL CHEMISTRY LETTERS, Vol: 1, Pages: 734-738, ISSN: 1948-7185- Author Web Link
- Cite
- Citations: 98
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Professor of Physics
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