• Login
    View Item 
    •   Home
    • Research
    • Articles
    • View Item
    •   Home
    • Research
    • Articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of KAUSTCommunitiesIssue DateSubmit DateThis CollectionIssue DateSubmit Date

    My Account

    Login

    Quick Links

    Open Access PolicyORCID LibguideTheses and Dissertations LibguideSubmit an Item

    Statistics

    Display statistics

    Oxidant-Dependent Thermoelectric Properties of Undoped ZnO Films by Atomic Layer Deposition

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Type
    Article
    Authors
    Kim, Hyunho cc
    Wang, Zhenwei cc
    Hedhili, Mohamed N. cc
    Wehbe, Nimer
    Alshareef, Husam N. cc
    KAUST Department
    Functional Nanomaterials and Devices Research Group
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Surface Science
    Date
    2017-03-07
    Online Publication Date
    2017-03-07
    Print Publication Date
    2017-04-11
    Permanent link to this record
    http://hdl.handle.net/10754/623434
    
    Metadata
    Show full item record
    Abstract
    Extraordinary oxidant-dependent changes in the thermoelectric properties of undoped ZnO thin films deposited by atomic layer deposition (ALD) have been observed. Specifically, deionized water and ozone oxidants are used in the growth of ZnO by ALD using diethylzinc as a zinc precursor. No substitutional atoms have been added to the ZnO films. By using ozone as an oxidant instead of water, a thermoelectric power factor (σS) of 5.76 × 10 W m K is obtained at 705 K for undoped ZnO films. In contrast, the maximum power factor for the water-based ZnO film is only 2.89 × 10 W m K at 746 K. Materials analysis results indicate that the oxygen vacancy levels in the water- and ozone-grown ZnO films are essentially the same, but the difference comes from Zn-related defects present in the ZnO films. The data suggest that the strong oxidant effect on thermoelectric performance can be explained by a mechanism involving point defect-induced differences in carrier concentration between these two oxides and a self-compensation effect in water-based ZnO due to the competitive formations of both oxygen and zinc vacancies. This strong oxidant effect on the thermoelectric properties of undoped ZnO films provides a pathway to improve the thermoelectric performance of this important material.
    Citation
    Kim H, Wang Z, Hedhili MN, Wehbe N, Alshareef HN (2017) Oxidant-Dependent Thermoelectric Properties of Undoped ZnO Films by Atomic Layer Deposition. Chemistry of Materials 29: 2794–2802. Available: http://dx.doi.org/10.1021/acs.chemmater.6b04654.
    Sponsors
    Research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST).
    Publisher
    American Chemical Society (ACS)
    Journal
    Chemistry of Materials
    DOI
    10.1021/acs.chemmater.6b04654
    Additional Links
    http://pubs.acs.org/doi/abs/10.1021/acs.chemmater.6b04654
    ae974a485f413a2113503eed53cd6c53
    10.1021/acs.chemmater.6b04654
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program

    entitlement

     
    DSpace software copyright © 2002-2022  DuraSpace
    Quick Guide | Contact Us | KAUST University Library
    Open Repository is a service hosted by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items. For anonymous users the allowed maximum amount is 50 search results.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.