Journal ArticleDOI
Thermally stable, efficient polymer solar cells with nanoscale control of the interpenetrating network morphology
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TLDR
By applying specific fabrication conditions summarized in the Experimental section and post-production annealing at 150°C, polymer solar cells with power-conversion efficiency approaching 5% were demonstrated.Abstract:
By applying the specific fabrication conditions summarized in the Experimental section and post-production annealing at 150 °C, polymer solar cells with power-conversion efficiency approaching 5 % are demonstrated. These devices exhibit remarkable thermal stability. We attribute the improved performance to changes in the bulk heterojunction material induced by thermal annealing. The improved nanoscale morphology, the increased crystallinity of the semiconducting polymer, and the improved contact to the electron-collecting electrode facilitate charge generation, charge transport to, and charge collection at the electrodes, thereby enhancing the device efficiency by lowering the series resistance of the polymer solar cells.read more
Citations
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Molecular materials for organic photovoltaics: small is beautiful.
TL;DR: In this short review various classes of molecular donors are discussed with the aim of defining possible basic molecular structures that can combine structural simplicity, low molecular weight, synthetic accessibility, scalability and that can represent possible starting points for the development of simple and cost-effective OPV materials.
Journal ArticleDOI
Controlling Morphology in Polymer–Fullerene Mixtures
TL;DR: In this paper, a simple method to determine the agglomerated-amorphous ratio of poly(3-hexylthiophene) was proposed to control the degree of aggregation/crystallinity of the P3HT in the final device.
Journal ArticleDOI
The Active Layer Morphology of Organic Solar Cells Probed with Grazing Incidence Scattering Techniques
TL;DR: Grazing incidence X-ray scattering provides unique insights into the morphology of active materials and thin film layers used in organic photovoltaic devices and conjugated polymers, such as poly(3-hexylthiophene) (P3HT).
Journal ArticleDOI
Influence of blend microstructure on bulk heterojunction organic photovoltaic performance
TL;DR: This tutorial review examines the influence of polymer molecular weight and blend composition upon device performance, and discusses how a variety of processing techniques can be used to control the blend microstructure, leading to improvements in solar cell efficiencies.
Journal ArticleDOI
Solar cells utilizing small molecular weight organic semiconductors
TL;DR: In this article, the physical processes that lead to photocurrent generation in organic solar cells, as well as the various architectures employed to optimize device performance are discussed, including donor-acceptor heterojunction for efficient exciton dissociation, the exciton blocking layer, the mixed or bulk heterjunction, and the stacked or tandem cell.
References
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Journal ArticleDOI
Polymer photovoltaic cells : enhanced efficiencies via a network of internal donor-acceptor heterojunctions
TL;DR: In this paper, the carrier collection efficiency and energy conversion efficiency of polymer photovoltaic cells were improved by blending of the semiconducting polymer with C60 or its functionalized derivatives.
Journal ArticleDOI
2.5% efficient organic plastic solar cells
Sean E. Shaheen,Christoph J. Brabec,N. Serdar Sariciftci,F. Padinger,Thomas Fromherz,Jan C. Hummelen +5 more
TL;DR: In this article, the power conversion efficiency of organic photovoltaic devices based on a conjugated polymer/methanofullerene blend is dramatically affected by molecular morphology.
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Effects of Postproduction Treatment on Plastic Solar Cells
TL;DR: In this article, a post-production treatment that improves the performance of solar cells based on poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl C61-butyric acid methyl ester (PCBM) was developed.
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
TL;DR: 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.
Journal ArticleDOI
Modeling photocurrent action spectra of photovoltaic devices based on organic thin films
TL;DR: In this article, the authors modeled experimental short-circuit photocurrent action spectra of poly(3-(4′-(1″,4″,7″-trioxaoctyl)phenyl)thiophene) (PEOPT)/fullerene (C60) thin film heterojunction photovoltaic devices.