Journal ArticleDOI
Enhanced Air Stability of Polymer Solar Cells with a Nanofibril-Based Photoactive Layer
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TLDR
Investigating the photo-oxidation behavior of a bulk-heterojunction (BHJ) photoactive film made of single-crystalline poly(3-hexlythiophene) (P3HT) nanofibrils and fullerene derivatives showed significantly enhanced air stability under sunlight, whereas the PCE of the conventional BHJ solar cell decreased to 20% of its initial PCE under the same experimental conditions.Abstract:
In spite of the rapid increase in the power conversion efficiency (PCE) of polymer solar cells (PSCs), the poor stability of the photoactive layer in air under sunlight is a critical problem blocking commercialization of PSCs. This study investigates the photo-oxidation behavior of a bulk-heterojunction (BHJ) photoactive film made of single-crystalline poly(3-hexlythiophene) (P3HT) nanofibrils and fullerene derivatives [phenyl-C61-butyric methyl ester (PCBM), indene-C 60 bisadduct (ICBA)]. Because the single-crystalline P3HT nanofibrils had tightly packed π–π stacking, the permeation of oxygen and water into the nanofibrils was significantly reduced. Chemical changes in P3HT were not apparent in the nanofibrils, and hence the air stability of the nanofibril-based BHJ film was considerably enhanced as compared with conventional BHJ films. The chemical changes were monitored by Fourier-transform infrared (FT-IR) spectroscopy, Raman spectroscopy, and UV–vis absorbance. Inverted PSCs made of the nanofibril-ba...read more
Citations
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Journal ArticleDOI
Stability of organic solar cells: challenges and strategies
Pei Cheng,Xiaowei Zhan +1 more
TL;DR: The factors limiting the stability of OSCs are summarized, such as metastable morphology, diffusion of electrodes and buffer layers, oxygen and water, irradiation, heating and mechanical stress, and recent progress in strategies to increase the stability are surveyed.
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A comprehensive review on poly(3-alkylthiophene)-based crystalline structures, protocols and electronic applications
Samira Agbolaghi,Sahar Zenoozi +1 more
TL;DR: In this article, the remarkable crystalline structures of P3ATs comprising single crystals, nanofibers, nano/microwires, nanoribbons, micelles, nanowhiskers, thin films, spherulites, etc.
Journal ArticleDOI
Improving, characterizing and predicting the lifetime of organic photovoltaics
Suren A. Gevorgyan,Ilona Maria Heckler,Eva Bundgaard,Michael Corazza,Markus Hösel,Roar R. Søndergaard,Gisele Alves dos Reis Benatto,Mikkel Jørgensen,Frederik C. Krebs +8 more
TL;DR: In this article, a review summarizes the recent progress in the stability and lifetime of organic photovoltaics (OPVs), in particular recently proposed solutions to failure mechanisms in different layers of the device stack are discussed comprising both structural and chemical modifications.
Journal ArticleDOI
High-performance flexible and air-stable perovskite solar cells with a large active area based on poly(3-hexylthiophene) nanofibrils
TL;DR: In this article, Li-doped poly(3-hexylthiopehene) (P3HT) nanofibrils were used as a hole transporting layer (HTL) for flexible metal halide perovskite solar cells.
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Two-Dimensional Bi2O2Se with High Mobility for High-Performance Polymer Solar Cells.
Chengwen Huang,Huangzhong Yu +1 more
TL;DR: This work fabricates successfully the Bi2O2Se few-layer 2D nanoflakes by combining lithium intercalation with shear force-assisted liquid phase exfoliation and applies it as a third component to improve charge carrier mobility in PSCs for the first time.
References
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TL;DR: In this article, the authors presented a review of several organic photovoltaics (OPV) technologies, including conjugated polymers with high-electron-affinity molecules like C60 (as in the bulk-heterojunction solar cell).
Journal ArticleDOI
Polymer–Fullerene Composite Solar Cells
TL;DR: Polymer-based organic photovoltaic systems hold the promise for a cost-effective, lightweight solar energy conversion platform, which could benefit from simple solution processing of the active layer.
Journal ArticleDOI
Polymer solar cells
TL;DR: In this article, a review summarizes recent progress in the development of polymer solar cells and provides a synopsis of major achievements in the field over the past few years, while potential future developments and the applications of this technology are also briefly discussed.
Journal ArticleDOI
A polymer tandem solar cell with 10.6% power conversion efficiency
Jingbi You,Letian Dou,Ken Yoshimura,Takehito Kato,Kenichiro Ohya,Tom Moriarty,Keith Emery,Chun-Chao Chen,Jing Gao,Gang Li,Yang Yang +10 more
TL;DR: The development of a high-performance low bandgap polymer that enables a solution processed tandem solar cell with certified 10.6% power conversion efficiency under standard reporting conditions, which is the first certified polymer solar cell efficiency over 10%.