A new ZnO nanotetrapods/SnO2nanoparticles composite photoanode for high efficiency flexible dye-sensitized solar cells

Literature Information

Publication Date 2010-07-06
DOI 10.1039/C000584C
Impact Factor 3.676
Authors

Wei Chen, Yongcai Qiu, Shihe Yang


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Abstract

We report a new photoanode for flexible dye sensitized solar cells based on a judicious combination of SnO2 nanoparticles and ZnO nanotetrapods and the development of an effective low temperature fabrication technique of “acetic acid gelation–mechanical press–ammonia activation”. A 4.91% efficiency has been achieved on an ITO-coated polyethylenenaphthalate (ITO/PEN) substrate under 1 sun equivalent illumination. The peculiar symmetrical branching morphology of ZnO nanotetrapods is beneficial to charge collection of the SnO2/ZnO composite photoanode. The formation of a thin ZnO shell on SnO2 nanoparticles, after ammonia activation, is critical to boosting the open-circuit photovoltage and to improving inter-particle contacts as well as photoelectron injection. The mechanical press, apart from enhancing film durability, has also significantly improved charge collection.

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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