Journal ArticleDOI
Nanoscale Morphology of High-Performance Polymer Solar Cells
Xiaoniu Yang,J Joachim Loos,Sjoerd Veenstra,Wiljan Verhees,MM Martijn Wienk,Jan M. Kroon,Matthias A. J. Michels,René A. J. Janssen +7 more
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TLDR
Both the improved crystalline nature of films and increased but controlled demixing between the two constitutes therein after annealing explains the considerable increase of the power conversion efficiency observed in these devices.Abstract:
Transmission electron microscopy and electron diffraction are used to study the changes in morphology of composite films of poly(3-hexylthiophene) (P3HT) and a methanofullerene derivative (PCBM) in bulk heterojunction solar cells. Thermal annealing produces and stabilizes a nanoscale interpenetrating network with crystalline order for both components. P3HT forms long, thin conducting nanowires in a rather homogeneous, nanocrystalline PCBM film. Both the improved crystalline nature of films and increased but controlled demixing between the two constitutes therein after annealing explains the considerable increase of the power conversion efficiency observed in these devices.read more
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BookDOI
Green Energy and Technology
Hatim Machrafi,Abourriche Abdelkrim,Abourriche Abdelmjid,Bandyopadhyay Santanu,Marc Birot,Glasnovic Zvonimir,Huang Zhijia,Kazim Ayoub,Komninos Neofytos P.,Liu Haifeng,Margeta Jure,Narodoslawsky Michael,Oumam Mina,Pailler René,Sierens Roger,Stoeglehner Gernot,Takeshita Takayuki,Verhelst Sebastian,Yao Mingfa +18 more
TL;DR: Green Energy and Technology as discussed by the authors is a monograph series for scientific and technological approaches to "green" i.e., environmentally friendly and sustainable technologies, focusing on energy and power supply, while a focus lies on green solutions in industrial engineering and engineering design.
Journal ArticleDOI
Recombination in Annealed and Nonannealed Polythiophene/Fullerene Solar Cells: Transient Photovoltage Studies versus Numerical Modeling
Rick Hamilton,Christopher G. Shuttle,Brian C. O’Regan,Thomas C. Hammant,Jenny Nelson,James R. Durrant +5 more
TL;DR: In this paper, the authors measured the recombination flux at both open circuit and short circuit conditions and determined that the increase in rate constant observed for the nonannealed devices is sufficient to explain the differences in device performance.
Journal ArticleDOI
A Simple and Effective Modification of PCBM for Use as an Electron Acceptor in Efficient Bulk Heterojunction Solar Cells
TL;DR: In this paper, a simple low-cost and effective approach of modifying poly(3-hexylthiophene) and improving its absorption is reported which can be extended to all fullerene derivatives with an ester structure.
Journal ArticleDOI
High-conductivity poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) film for use in ITO-free polymer solar cells
TL;DR: In this paper, a simple method to enhance the conductivity of poly(3,4-ethylenedioxythiophene)-poly(styrene-sulfonate) (PEDOT:PSS) films through spin-coating with various surface modified compounds, and then applied to the preparation of ITO-free polymer solar cells (PSCs).
Journal ArticleDOI
Incomplete Exciton Harvesting from Fullerenes in Bulk Heterojunction Solar Cells
TL;DR: This work investigates the internal quantum efficiencies of high efficiency poly-3-hexylthiophene:[6,6]-phenyl-C(61)-butyric acid methyl ester solar cells and finds them to be lower at wavelengths where the PCBM absorbs.
References
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Journal ArticleDOI
Hybrid Nanorod-Polymer Solar Cells
TL;DR: It is demonstrated that semiconductor nanorods can be used to fabricate readily processed and efficient hybrid solar cells together with polymers and Tuning the band gap by altering the nanorod radius enabled us to optimize the overlap between the absorption spectrum of the cell and the solar emission spectrum.
Journal ArticleDOI
Two‐layer organic photovoltaic cell
TL;DR: In this paper, a two-layer organic photovoltaic cell was fabricated from copper phthalocyanine and a perylene tetracarboxylic derivative, achieving a power conversion efficiency of about 1% under simulated AM2 illumination.
Journal ArticleDOI
Two-dimensional charge transport in self-organized, high-mobility conjugated polymers
Henning Sirringhaus,Peter J. Brown,Richard H. Friend,Martin Nielsen,Klaus Bechgaard,B.M.W. Langeveld-Voss,A. J. H. Spiering,René A. J. Janssen,E. W. Meijer,P. T. Herwig,Dago M. de Leeuw +10 more
TL;DR: In this article, the authors used thin-film, field effect transistor structures to probe the transport properties of the ordered microcrystalline domains in the conjugated polymer poly(3-hexylthiophene), P3HT.
Journal ArticleDOI
Efficient photodiodes from interpenetrating polymer networks
J. J. M. Halls,C. A. Walsh,Neil C. Greenham,E.A. Marseglia,Richard H. Friend,Stephen C. Moratti,A.B. Holmes +6 more
TL;DR: In this paper, the interpenetrating network formed from a phase-segregated mixture of two semiconducting polymers is shown to provide both the spatially distributed interfaces necessary for efficient charge photo-generation, and the means for separately collecting the electrons and holes.
Journal ArticleDOI
Integrated Optoelectronic Devices Based on Conjugated Polymers
TL;DR: An all-polymer semiconductor integrated device is demonstrated with a high-mobility conjugated polymer field-effect transistor driving a polymer light-emitting diode (LED) of similar size, which represents a step toward all- polymer optoelectronic integrated circuits such as active-matrix polymer LED displays.