By genetically encoding affinity for inorganic materials into the capsid proteins of the M13 bacteriophage, the virus can act as a template for the synthesis of nanomaterial composites for use in various device applications. Herein, the M13 bacteriophage is employed to build a multifunctional and three-dimensional scaffold capable of improving both electron collection and light harvesting in dye-sensitized solar cells (DSSCs). This has been accomplished by binding gold nanoparticles (AuNPs) to the virus proteins and encapsulating the AuNP-virus complexes in TiO2 to produce a plasmon-enhanced and nanowire (NW)-based photoanode. The NW morphology exhibits an improved electron diffusion length compared to traditional nanoparticle-based DSSCs, and the AuNPs increase the light absorption of the dye-molecules through the phenomenon of localized surface plasmon resonance. Consequently, we report a virus-templated and plasmon-enhanced DSSC with an efficiency of 8.46%, which is achieved through optimizing both the NW morphology and the concentration of AuNPs loaded into the solar cells. In addition, we propose a theoretical model that predicts the experimentally observed trends of plasmon enhancement.
Versatile three-dimensional virus-based template for dye-sensitized solar cells with improved electron transport and light harvesting.
Po-Yen Chen,Xiangnan Dang,Matthew T. Klug,J. Qi,Noémie‐Manuelle Dorval Courchesne,F. Burpo,N. Fang,P. Hammond,A. Belcher
Published 2013 in ACS Nano
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- Publication year
2013
- Venue
ACS Nano
- Publication date
2013-07-09
- Fields of study
Medicine, Materials Science, Chemistry, Engineering
- Identifiers
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- Source metadata
Semantic Scholar, PubMed
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