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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Fluorine substituted thiophene-quinoxaline copolymer to reduce the HOMO level and increase the dielectric constant for high open-circuit voltage organic solar cells†
Yunzhang Lu,Yunzhang Lu,Zhengguo Xiao,Yongbo Yuan,Haimei Wu,Zhongwei An,Yanbing Hou,Chao Gao,Jinsong Huang +8 more
TL;DR: In this paper, a novel fluorinated copolymer (FTQ) and shown it to exhibit a significantly higher open circuit voltage (VOC) in bulk heterojunction solar cells with [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) compared to the low band-gap polymer Thiophene-Quinoxaline (TQ).
Journal ArticleDOI
Efficient flexible and thermally stable pentacene/C60 small molecule based organic solar cells
Ajay K. Pandey,Jean-Michel Nunzi +1 more
TL;DR: In this article, flexible thin film solar cells based on a pentacene/C60 heterojunction on indium tin oxide coated polyethylene terephthalate (PET) substrates are described.
Journal ArticleDOI
Ultrasonic-assisted nanodimensional self-assembly of poly-3-hexylthiophene for organic photovoltaic cells.
TL;DR: Results indicate that ultrasonic agitation effectively generates P3HT nanowires, exemplifying a quick route to nanoscale morphology control which contributes to better organic photovoltaic cell performance.
Journal ArticleDOI
Nanoscale electrical characterization of organic photovoltaic blends by conductive atomic force microscopy
Olivier Douhéret,Laurence Lutsen,Ann Swinnen,Martin Breselge,Koen Vandewal,Ludwig Goris,Jean Manca +6 more
TL;DR: In this article, conductive atomic force microscopy (CAFM) is used to perform electrical characterization of organic photovoltaic blends with high spatial resolution, and the ability of CAFM to electrically evidence phase separated donor and acceptor regions is demonstrated.
Journal ArticleDOI
Modeling the temperature induced degradation kinetics of the short circuit current in organic bulk heterojunction solar cells
Bst Bert Conings,Sabine Bertho,Koen Vandewal,Alessia Senes,Jan D'Haen,Jean Manca,Raj René Janssen +6 more
TL;DR: In this paper, the authors acknowledge the Institute for the promotion of science and technology in Flanders (IWT Vlaanderen) for funding via the IWT-SBO project Polyspec, the Fund for Scientific Research, Flanders, (F.O.) in the framework of project G.0252.04 and the Special Research Fund (B.W.F.).
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.