Journal ArticleDOI
Dipole induced anomalous S-shape I-V curves in polymer solar cells
TLDR
In this article, the authors used poly(3-hexylthiophene):[6, 6]-phenyl-C61-butyric acid methyl ester as their model polymer system and investigate different device structures using ultraviolet photoelectron spectroscopy as their primary tool to investigate the reason for this S-shaped kink.Abstract:
A kink is sometimes seen in the I-V curves for organic solar cells. In literature charge blocking has been speculated to be responsible for such kind of anomalous features. In this manuscript, we use poly(3-hexylthiophene):[6, 6]-phenyl-C61-butyric acid methyl ester as our model polymer system and investigate different device structures using ultraviolet photoelectron spectroscopy as our primary tool to investigate the reason for this S-shaped kink. We attribute this anomalous feature to the presence of strong interface dipoles. We further propose a model based on the standard set of Poisson equation, continuity equation, and current density equations including both drift and diffusion components.read more
Citations
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Journal ArticleDOI
Polymer–fullerene bulk heterojunction solar cells
Carsten Deibel,Vladimir Dyakonov +1 more
TL;DR: An overview of the physical function of organic solar cells, their state-of-the-art performance and limitations, as well as novel concepts to achieve a better material stability and higher power conversion efficiencies are presented in this paper.
Journal ArticleDOI
Polymer-Fullerene Bulk Heterojunction Solar Cells
Carsten Deibel,Vladimir Dyakonov +1 more
TL;DR: An overview of the physical function of organic solar cells, their state-of-the-art performance and limitations, as well as novel concepts to achieve a better material stability and higher power conversion efficiencies are presented in this paper.
Journal ArticleDOI
Supramolecular halogen bond passivation of organic-inorganic halide perovskite solar cells.
Antonio Abate,Michael Saliba,Derek J. Hollman,Samuel D. Stranks,Konrad Wojciechowski,Roberto Avolio,Giulia Grancini,Annamaria Petrozza,Henry J. Snaith +8 more
TL;DR: It is shown that trap states at the perovskite surface generate charge accumulation and consequent recombination losses in working solar cells and the surface passivation introduces an important direction for future progress in perovkite solar cells.
Journal ArticleDOI
Fill factor in organic solar cells
Boyuan Qi,Jizheng Wang +1 more
TL;DR: A brief and comprehensive summary on FF from a fundamental point of view is given, based on the three fundamental elements in the solar cell equivalent circuit, namely series resistance, shunt resistance and diode.
Journal ArticleDOI
Interface investigation and engineering – achieving high performance polymer photovoltaic devices
TL;DR: In this paper, the authors report the progress of interface engineering in polymer solar cell research, where the multiple functions of the interfacial materials will be discussed, and discuss the energy level alignment at the bulk heterojunction (BHJ) interface, with the aim of providing a better understanding towards the route of high efficiency polymer solar cells.
References
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Journal ArticleDOI
High-efficiency solution processable polymer photovoltaic cells by self-organization of polymer blends
TL;DR: In this article, the authors report highly efficient polymer solar cells based on a bulk heterojunction of polymer poly(3-hexylthiophene) and methanofullerene.
Journal ArticleDOI
Thermally stable, efficient polymer solar cells with nanoscale control of the interpenetrating network morphology
TL;DR: 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.
Journal ArticleDOI
Photoinduced electron transfer from a conducting polymer to buckminsterfullerene.
TL;DR: Because the photoluminescence in the conducting polymer is quenched by interaction with C60, the data imply that charge transfer from the excited state occurs on a picosecond time scale.