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
Citations
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Journal ArticleDOI
Structural and Electrical Functionality of NiO Interfacial Films in Bulk Heterojunction Organic Solar Cells
Michael D. Irwin,Jonathan D. Servaites,D. Bruce Buchholz,Benjamin J. Leever,Benjamin J. Leever,Jun Liu,Jonathan D. Emery,Ming Zhang,Jung Hwan Song,Michael F. Durstock,Arthur J Freeman,Michael J. Bedzyk,Michael J. Bedzyk,Mark C. Hersam,Robert P. H. Chang,Mark A. Ratner,Tobin J. Marks +16 more
TL;DR: In this article, the functionality of NiO interfacial layers in enhancing bulk heterojunction (BHJ) organic photovoltaic (OPV) cell performance is investigated by integrated characterization of the electrical properties, microstructure, electronic structure, and optical properties of thin NiO films grown on glass/ITO electrodes.
Journal ArticleDOI
Towards High Performance Organic Photovoltaic Cells: A Review of Recent Development in Organic Photovoltaics
TL;DR: In this article, the state-of-the-art performance of organic photovoltaic cells (OPVs) is summarized based on several of the latest developed approaches to accurately detect the separation of electron-hole pairs in the femtosecond regime, especially for OPVs with bulk and multiple heterojunctions.
Journal ArticleDOI
Design Principles and Top Non-Fullerene Acceptor Candidates for Organic Photovoltaics
Steven A. Lopez,Benjamin Sanchez-Lengeling,Julio de Goes Soares,Alán Aspuru-Guzik,Alán Aspuru-Guzik +4 more
TL;DR: In this article, the authors explored the chemical space of over 51,000 non-fullerene acceptors featuring 106 common moieties from the organic electronics literature, including naphthalene diimides, benzathiadiazoles, and fused fluoroanthenediimides.
Journal ArticleDOI
Long‐Term Thermal Stability of High‐Efficiency Polymer Solar Cells Based on Photocrosslinkable Donor‐Acceptor Conjugated Polymers
Gianmarco Griffini,Gianmarco Griffini,Gianmarco Griffini,Jessica D. Douglas,Jessica D. Douglas,Claudia Piliego,Claudia Piliego,Thomas W. Holcombe,Thomas W. Holcombe,Stefano Turri,Jean M. J. Fréchet,Jean M. J. Fréchet,Justin L. Mynar,Justin L. Mynar +13 more
TL;DR: In the most successful OPV device architectures, the photoactive layer is composed of a blend of a p-type conjugated polymer and an n-type fullerene derivative, forming the socalled donor–acceptor bulk heterojunction (BHJ).
Journal ArticleDOI
Organic electronics from perylene to organic photovoltaics: painting a brief history with a broad brush
TL;DR: In this paper, the authors analyzed the motivations behind specific BHJ designs and compared the performance of the device to the active layer composites, and examined the effect of chemical functionalization in a series of fullerene derivatives, carbon nanotubes and non-fullerene based compounds on their performances in PSCs.
References
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Hybrid Nanorod-Polymer Solar Cells
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Journal ArticleDOI
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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.