Ga ordering and electrical conductivity in nanotwin and superlattice-structured Ga-doped ZnO

Sang Won Yoon, Jong Hyun Seo, Tae Yeon Seong, Tae Hwan Yu, Yil Hwan You, Kon Bae Lee, Hoon Kwon, Jae Pyoung Ahn

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    22 Citations (Scopus)

    Abstract

    We have investigated the Ga-ordering controlled by structural changes from nanotwin to superlattice in Ga-doped ZnO (GZO) targets for transparent conductive oxides (TCOs) and discussed the distribution effect of Ga atoms on electrical conductivities of GZOs. The nanotwin and superlattice structures were preferentially formed by Ga-doping and sintering at high temperature. The relative fraction of nanotwin increased above transition concentration (TC ≈ 5.6 wt % Ga). Here, we found that Ga atoms at nanotwin are distributed as clustered and disordered states, while they are completely ordered in superlattice. Ultimately, the superlattice leads to high electrical conductivity in GZOs rather than the nanotwin.

    Original languageEnglish
    Pages (from-to)1167-1172
    Number of pages6
    JournalCrystal Growth and Design
    Volume12
    Issue number3
    DOIs
    Publication statusPublished - 2012 Mar 7

    ASJC Scopus subject areas

    • General Chemistry
    • General Materials Science
    • Condensed Matter Physics

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