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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Recent Advances in Organic Solar Cells
TL;DR: In this paper, the three basic types of organic solar cells (polymer based, small molecules based and small molecules mixed with polymers) are described in detail and the current state of research is described and the best reported efficiencies are listed.
Journal ArticleDOI
Low band gap dithieno[3,2-b:2′,3′-d]silole-containing polymers, synthesis, characterization and photovoltaic application
TL;DR: A series of low band gap silole-containing polymers were synthesized with different alkyl side chains and a power conversion efficiency of 3.43% was obtained.
Journal ArticleDOI
Broadband optical absorption enhancement through coherent light trapping in thin-film photovoltaic cells.
Mukul Agrawal,Peter Peumans +1 more
TL;DR: It is shown that optical absorption in thin-film photovoltaic cells can be enhanced by inserting a tuned two-component aperiodic dielectric stack into the device structure and optimizing the spectral photon density-of-states to enhance the absorption of the active layer across its absorption spectrum.
Journal ArticleDOI
Characterization of Organic Solar Cells: the Importance of Device Layout
TL;DR: In this article, the efficiency of donor-acceptor organic solar cells has been investigated and it is shown that devices with crossing electrodes and unpatterned (semi)conducting organic layers can collect a non-negligible current from regions usually not considered as part of the photovoltaic element, a fact that might lead to an overestimation of the power conversion efficiency.
Journal ArticleDOI
A new insight into controlling poly(3-hexylthiophene) nanofiber growth through a mixed-solvent approach for organic photovoltaics applications
Shuangyong Sun,Teddy Salim,Lydia Helena Wong,Yong Lim Foo,Freddy Yin Chiang Boey,Yeng Ming Lam,Yeng Ming Lam +6 more
TL;DR: In this paper, the effect of different poor solvents in driving poly(3-hexylthiophene) chain self-assembly into nanofibers and also the effects of a small amount of good solvent in such a poor solvent system in controlling the nanofiber morphology were explored.
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.