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dc.contributor.advisorPaula T. Hammond and Angela M. Belcher.en_US
dc.contributor.authorLadewski, Rebecca L. (Rebecca Lynn)en_US
dc.contributor.otherMassachusetts Institute of Technology. Dept. of Chemical Engineering.en_US
dc.date.accessioned2013-01-23T19:42:38Z
dc.date.available2013-01-23T19:42:38Z
dc.date.copyright2012en_US
dc.date.issued2012en_US
dc.identifier.urihttp://hdl.handle.net/1721.1/76483
dc.descriptionThesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2012.en_US
dc.descriptionCataloged from PDF version of thesis.en_US
dc.descriptionIncludes bibliographical references.en_US
dc.description.abstractA number of challenges related to the development of new organic-inorganic photovoltaic systems exist, including the ability to enhance the materials interface and improve the control required in development of nanoscale materials. Layer-by-layer (LbL) assembly allows for the incorporation of a wide range of functional materials into structured thin films based on the alternate adsorption of cationic and anionic species. Biomolecules, and in particular viruses, show great potential as components of functional materials due to their capacity for molecular recognition and self-assembly. Here we report that by substituting a negatively charged variant of M13 bacteriophage for the negatively charged polymer during the dip LbL assembly process, phage can be incorporated into a hybrid material with characteristics of both its biological and polymeric components. The resulting mesoporous polymer films can be used as a template for the construction of the titania photoanode of dye sensitized solar cells (DSSCs) with a novel nanowire architecture to enhance electron transport. The biotemplated nanowires are shown to significantly increase device electron diffusion length and increase device efficiency as compared to LbL-templated titania photoanodes made without bacteriophage. Spray LbL is also investigated as an assembly method for the construction porous templates for titania photoanodes. The necessary porous transition is shown to occur on flat substrates, like those normally utilized for DSSCs, and on porous metal meshes, substrates that have been proposed as lower-cost DSSC current collectors. Spray LbL is demonstrated to coat metal to different degrees of conformality as a function of mesh pore size. The conformality of the coating, in turn, determines which functions it could assume within a LbL-based DSSC.en_US
dc.description.statementofresponsibilityby Rebecca L. Ladewski.en_US
dc.format.extent145 p.en_US
dc.language.isoengen_US
dc.publisherMassachusetts Institute of Technologyen_US
dc.rightsM.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.en_US
dc.rights.urihttp://dspace.mit.edu/handle/1721.1/7582en_US
dc.subjectChemical Engineering.en_US
dc.titleInvestigation of layer-by-layer assembly and M13 bacteriophage nanowires for dye-sensitized solar cellsen_US
dc.title.alternativeInvestigation of LbL assembly and M13 bacteriophage nanowires for DSSCsen_US
dc.typeThesisen_US
dc.description.degreePh.D.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Dept. of Chemical Engineering.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Chemical Engineering
dc.identifier.oclc822487769en_US


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