Toward controlling the carrier density of Si doped Ga2O3 films by pulsed laser deposition

Fabi Zhang, Makoto Arita, Xu Wang, Zhengwei Chen, Katsuhiko Saito, Tooru Tanaka, Mitsuhiro Nishio, Teruaki Motooka, Qixin Guo

    Research output: Contribution to journalArticlepeer-review

    33 Citations (Scopus)

    Abstract

    Precise control of dopant composition is critical for the production of semiconductor films with desired properties. Here, we present results on the electrical properties for Si doped Ga2O3 films grown by pulsed laser deposition technique (PLD). The Si composition in the films can be controlled by changing the target composition as observed from the secondary ion mass spectroscopy measurement. The carrier density of the films is varied from the order of 1015 to 1020 cm-3 while the conductivity from 10-4 to 1 S cm-1 as measured by Hall equipment. The carrier density of the films has been verified by Kelvin force microscopy, which shows an increased surface work function with the increase of carrier density. The results suggest that the carrier density of β-Ga2O3 films is controllable by Si doping by PLD, paving a way to develop the Ga2O3 film-based electronic devices.

    Original languageEnglish
    Article number102105
    JournalApplied Physics Letters
    Volume109
    Issue number10
    DOIs
    Publication statusPublished - Sep 5 2016

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy (miscellaneous)

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