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
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TLDR
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.Abstract:
Transmission electron microscopy and electron diffraction are used to study the changes in morphology of composite films of poly(3-hexylthiophene) (P3HT) and a methanofullerene derivative (PCBM) in bulk heterojunction solar cells. Thermal annealing produces and stabilizes a nanoscale interpenetrating network with crystalline order for both components. P3HT forms long, thin conducting nanowires in a rather homogeneous, nanocrystalline PCBM film. 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.read more
Citations
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Journal ArticleDOI
The influence of intramolecular noncovalent interactions in unsymmetrical squaraines on material properties, film morphology and photovoltaic performance
Lin Yang,Youqin Zhu,Yan Jiao,Daobin Yang,Yao Chen,Jianglin Wu,Zhiyun Lu,Suling Zhao,Xuemei Pu,Yan Huang +9 more
TL;DR: In this paper, three unsymmetrical squaraines (USQs) with different number of hydroxyl groups were synthesized to understand the molecular structure-property relationship of photovoltaic materials.
Journal ArticleDOI
Understanding the Intrinsic Carrier Transport in Highly Oriented Poly(3-hexylthiophene): Effect of Side Chain Regioregularity.
TL;DR: Regular side chain substitution can be activated more easily and favors one-dimensional transport along the backbone chain direction, while the irregular sample presents the three-dimensional electron hopping behavior and high carrier mobility.
Journal ArticleDOI
3D-morphology reconstruction of nanoscale phase-separation in polymer memory blends
V. Khikhlovskyi,A. J. J. M. van Breemen,Jasper J. Michels,René A. J. Janssen,Gerwin H. Gelinck,Martijn Kemerink,Martijn Kemerink +6 more
TL;DR: In this article, a simple approach to study the full 3D morphology of phase-separated blends, taking advantage of the possibility to selectively dissolve the different components is introduced, which is applied in combination with AFM to investigate a blend of a semiconducting and ferroelectric polymer typically used as active layer in organic resistive switches.
Journal ArticleDOI
Spontaneous Interfacial Dipole Orientation Effect of Acetic Acid Solubilized PFN.
TL;DR: A spontaneous interfacial dipole orientation effect in acetic acid dissolved PFN is reported, which is strongly related to the interfacial dipsole and the corresponding device performance, and provides a deeper understanding of the PFN interlayer mechanism and has potential application in optoelectronic devices.
Journal ArticleDOI
Influence of Thickness and Annealing Temperature on the Optical Properties of Spin-Coated Photoactive P3HT:PCBM Blend
TL;DR: In this article, the effect of annealing temperature and thickness on the optical properties of composite poly(3-hexylthiophene) and phenyl butyric acid methylester (PCBM) was investigated.
References
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Journal ArticleDOI
Hybrid Nanorod-Polymer Solar Cells
TL;DR: It is demonstrated that semiconductor nanorods can be used to fabricate readily processed and efficient hybrid solar cells together with polymers and Tuning the band gap by altering the nanorod radius enabled us to optimize the overlap between the absorption spectrum of the cell and the solar emission spectrum.
Journal ArticleDOI
Two‐layer organic photovoltaic cell
TL;DR: In this paper, a two-layer organic photovoltaic cell was fabricated from copper phthalocyanine and a perylene tetracarboxylic derivative, achieving a power conversion efficiency of about 1% under simulated AM2 illumination.
Journal ArticleDOI
Two-dimensional charge transport in self-organized, high-mobility conjugated polymers
Henning Sirringhaus,Peter J. Brown,Richard H. Friend,Martin Nielsen,Klaus Bechgaard,B.M.W. Langeveld-Voss,A. J. H. Spiering,René A. J. Janssen,E. W. Meijer,P. T. Herwig,Dago M. de Leeuw +10 more
TL;DR: In this article, the authors used thin-film, field effect transistor structures to probe the transport properties of the ordered microcrystalline domains in the conjugated polymer poly(3-hexylthiophene), P3HT.
Journal ArticleDOI
Efficient photodiodes from interpenetrating polymer networks
J. J. M. Halls,C. A. Walsh,Neil C. Greenham,E.A. Marseglia,Richard H. Friend,Stephen C. Moratti,A.B. Holmes +6 more
TL;DR: In this paper, the interpenetrating network formed from a phase-segregated mixture of two semiconducting polymers is shown to provide both the spatially distributed interfaces necessary for efficient charge photo-generation, and the means for separately collecting the electrons and holes.
Journal ArticleDOI
Integrated Optoelectronic Devices Based on Conjugated Polymers
TL;DR: An all-polymer semiconductor integrated device is demonstrated with a high-mobility conjugated polymer field-effect transistor driving a polymer light-emitting diode (LED) of similar size, which represents a step toward all- polymer optoelectronic integrated circuits such as active-matrix polymer LED displays.