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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Controlled Synthesis and Energy Applications of One‐Dimensional Conducting Polymer Nanostructures: An Overview
Zhigang Yin,Qingdong Zheng +1 more
TL;DR: In this article, the authors summarized the synthetic strategies for various 1D conducting polymer nanostructures of conjugated polypyrrole (PPy), polyaniline (PANI), polythiophene (PTh), poly(p-phenylenevinylene) (PPV) and derivatives thereof.
Journal ArticleDOI
A new model for the morphology of P3HT/PCBM organic photovoltaics from small-angle neutron scattering: rivers and streams.
Wen Yin,Mark Dadmun,Mark Dadmun +2 more
TL;DR: A novel "rivers and streams" morphology is proposed to describe this model OPV system, which is consistent with these scattering results and previously reported photovoltaic functionality of P3HT/PCBM bulk heterojunctions.
Journal ArticleDOI
Charge Formation, Recombination, and Sweep-Out Dynamics in Organic Solar Cells
TL;DR: In this article, a critical discussion of the various physical processes occurring in organic bulk heterojunction (BHJ) solar cells based on recent experimental results is presented, ranging from photoexcitation to charge separation, recombination, and sweep-out to the electrodes.
Journal ArticleDOI
Efficient Charge Transfer and Fine-Tuned Energy Level Alignment in a THF-Processed Fullerene-Free Organic Solar Cell with 11.3% Efficiency.
Zhong Zheng,Omar Awartani,Bhoj Gautam,Delong Liu,Yunpeng Qin,Wanning Li,Alexander Bataller,Kenan Gundogdu,Harald Ade,Jianhui Hou +9 more
TL;DR: Fullerene-free organic solar cells show over 11% power conversion efficiency, processed by low toxic solvents, and the applied donor and acceptor in the bulk heterojunction exhibit almost the same highest occupied molecular orbital level, yet exhibit very efficient charge creation.
Journal ArticleDOI
Structures and properties of conjugated Donor–Acceptor copolymers for solar cell applications
Zhi-Guo Zhang,Jizheng Wang +1 more
TL;DR: In this paper, the fundamental donor and acceptor units for constructing polymer photovoltaic materials are introduced and classified, and several crucial aspects, including proper combination of D-A units, high planarity of the backbone and proper incorporation of side chains are particularly emphasized.
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.