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Nanoscale Morphology of High-Performance Polymer Solar Cells

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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.

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Journal ArticleDOI

Polythiophenes Comprising Conjugated Pendants for Polymer Solar Cells: A Review

TL;DR: This review will go over the most recent approaches that enable researchers to obtain in-depth information in the development of PTs comprising conjugated pendants for PSCs.
Journal ArticleDOI

Three-dimensional nanoscale organization of polymer solar cells

TL;DR: In this article, electron tomography was used to directly visualize with nanometre resolution and study the 3D morphological organization in the photoactive layers of PSCs, with the aim of identifying critical morphology parameters contributing to high efficiency of bulk heterojunction systems.
Journal ArticleDOI

Correlations among Chemical Structure, Backbone Conformation, and Morphology in Two Highly Efficient Photovoltaic Polymer Materials

TL;DR: In this article, the correlations among the chemical structure of backbone units, thermodynamic stability of backbone conformation, backbone curvature, phase transformation kinetics, and crystalline properties by utilizing quantum chemistry calculation, differential scanning calorimetry, temperature-dependent UV-vis absorption spectroscopy, and X-ray diffraction.
Journal ArticleDOI

Nanomorphology Evolution of P3HT/PCBM Blends during Solution-Processing from Coarse-Grained Molecular Simulations

TL;DR: In this paper, a multiscale, coarse-grained molecular simulation model for ternary solvent/P3HT/PCBM mixtures was constructed to reveal the correlations between solvent/solvent mixtures and the bulk heterojunction nanomorphologies during solution-processing.
Journal ArticleDOI

Advances in Polymer/Fullerene Nanocomposite: A Review on Essential Features and Applications

TL;DR: In this paper, the progress in polymer-and fullerene-based nanocomposite is discussed, and the technical relevance of polymer/fullerene nanocomposition is also reviewed considering photovoltaic, optical and temperature sensors, photoconductivity, and antimicrobial application.
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

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

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.
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