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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Synthesis and applications of low-bandgap conjugated polymers containing phenothiazine donor and various benzodiazole acceptors for polymer solar cells
Harihara Padhy,Jen Hsien Huang,Duryodhan Sahu,Dhananjaya Patra,Dhananjay Kekuda,Chih-Wei Chu,Chih-Wei Chu,Hong-Cheu Lin +7 more
TL;DR: In this article, a series of soluble donor-acceptor conjugated poly- mers comprising of phenothiazine donor and various benzodia-zole acceptors were designed, synthesized, and used for the fabrication of polymer solar cells.
Journal ArticleDOI
Fullerene dimers (C60/C70) for energy harvesting.
Juan Luis Delgado,Juan Luis Delgado,Eva Espíldora,Moritz Liedtke,Andreas Sperlich,Daniel Rauh,Andreas Baumann,Carsten Deibel,Vladimir Dyakonov,Nazario Martín,Nazario Martín +10 more
TL;DR: The [70]homodimer was found to be a distinctive species, being the strongest PL quencher and most efficient acceptor with the longest lifetime of the charge-separated (polaron) states.
Journal ArticleDOI
Enhanced photovoltaic performance of polymer solar cells by adding fullerene end-capped polyethylene glycol
TL;DR: A fullerene end-capped polyethylene glycol has been synthesized and used as an additive in organic solar cells based on poly(3-hexylthiophene) and phenyl-C61-butyric acid methyl ester (PCBM).
Journal ArticleDOI
Size effect on organic optoelectronics devices: Example of photovoltaic cell efficiency
TL;DR: In this article, the authors theoretically show that electrical parameters of organic photovoltaic cells are altered when the cell length becomes greater than one centimeter, and provide experimental verification with simple molecular heterojunction cells with areas from 0.03 to 0.78 cm2.
Journal ArticleDOI
Fullerene bisadduct as an effective phase-separation inhibitor in preparing poly(3-hexylthiophene)–[6,6]-phenyl-C61-butyric acid methyl ester blends with highly stable morphology
TL;DR: In this article, the bis-adduct of [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) is shown to be an effective inhibitor of the aggregation of PCBM inside the poly(3-hexylthiophene) (P3HT) matrix.
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.
Journal ArticleDOI
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.