Vertical aligned nanorod assembly by electrophoretic deposition from organic solvents

Kevin M. Ryan, S. Ahmed

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    Abstract

    The perpendicular alignment of II-VI nanorods in hybrid nanorod/polymer and all-nanorod solar cells is sought to reduce charge recombination by providing directional charge pathways to the electrodes. Here we describe the organization of II-VI nanorods into perpendicular assemblies over centimeter squared areas by a novel electrophoretic deposition approach. Monolayer assemblies are obtained by completely immersing parallel electrodes in a dilute solution of pyrolysis synthesized nanorods. The negatively charged nanorods deposit on the positive ITO electrode in ordered arrays which completely coat the electrode surface. The nanorods are hexagonally close packed with an interparticle separation of 2 nm occupied by interdigitated phosphonic acid surfactants. The nanorods are characterized by TEM, HRTEM, and HRSEM. This approach allows deposition of CdSe, CdS and CdTe nanorods in very large areas optimal for perpendicularly aligned nanorod solar cell application.

    Original languageEnglish
    Title of host publicationNext-Generation and Nano-Architectured Photovoltaics
    Pages36-40
    Number of pages5
    Publication statusPublished - 2009
    Event2009 MRS Fall Meeting - Boston, MA, United States
    Duration: 30 Nov 20094 Dec 2009

    Publication series

    NameMaterials Research Society Symposium Proceedings
    Volume1121
    ISSN (Print)0272-9172

    Conference

    Conference2009 MRS Fall Meeting
    Country/TerritoryUnited States
    CityBoston, MA
    Period30/11/094/12/09

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