Non-equilibrium origin of high electrical conductivity in gallium zinc oxide thin films

Andriy Zakutayev, Nicola H. Perry, Thomas O. Mason, David S. Ginley, Stephan Lany

    Research output: Contribution to journalArticlepeer-review

    46 Citations (Scopus)

    Abstract

    Non-equilibrium state defines physical properties of materials in many technologies, including architectural, metallic, and semiconducting amorphous glasses. In contrast, crystalline electronic and energy materials, such as transparent conductive oxides (TCO), are conventionally thought to be in equilibrium. Here, we demonstrate that high electrical conductivity of crystalline Ga-doped ZnO TCO thin films occurs by virtue of metastable state of their defects. These results imply that such defect metastability may be important in other functional oxides. This finding emphasizes the need to understand and control non-equilibrium states of materials, in particular, their metastable defects, for the design of novel functional materials.

    Original languageEnglish
    Article number232106
    JournalApplied Physics Letters
    Volume103
    Issue number23
    DOIs
    Publication statusPublished - Dec 2 2013

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy (miscellaneous)

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