Insights into the electrophoretic deposition of colloidal II-VI nanorods: Optimization for vertically and horizontally aligned assemblies

Edric Gill, Pai Liu, Kevin M. Ryan

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Electrophoretic deposition is used to deposit CdS and CdSe nanorods onto planar centimetre scale substrates directly from solution. It is found that the net charge and dipole interactions on the nanorods are the sole factors in the resulting assemblies formed upon deposition, with the higher net charge nanorods forming vertically aligned assemblies, while the nanorods with a reduced net charge forming horizontal assemblies. Numerical modelling and simulation provided an insight into the resulting deposits and it was concluded that a minimum net charge of +4e is required to obtain vertically aligned assemblies. This significant result means that nanorods can be tailored for specific device architectures by modification of the nanorod such as net charge, with vertically aligned assemblies being ideal for sandwich-type structures and horizontally aligned assemblies being ideal for planar electrode-type optoelectronic devices.

    Original languageEnglish
    Pages (from-to)D3019-D3024
    JournalJournal of the Electrochemical Society
    Volume162
    Issue number11
    DOIs
    Publication statusPublished - 2015

    Fingerprint

    Dive into the research topics of 'Insights into the electrophoretic deposition of colloidal II-VI nanorods: Optimization for vertically and horizontally aligned assemblies'. Together they form a unique fingerprint.

    Cite this