Journal ArticleDOI
Bipolar doping and band-gap anomalies in delafossite transparent conductive oxides.
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TLDR
It is shown that both properties are results of a large disparity between the fundamental gap and the apparent optical gap, a finding that could lead to a breakthrough in the study of bipolarly dopable wide-gap semiconductor oxides.Abstract:
Doping wide-gap materials p type is highly desirable but often difficult. This makes the recent discovery of p-type delafossite oxides, CuM(III)O2, very attractive. The CuM(III)O2 also show unique and unexplained physical properties: Increasing band gap from M(III) = Al,Ga, to In, not seen in conventional semiconductors. The largest gap CuInO2 can be mysteriously doped both n and p type but not the smaller gaps CuAlO2 and CuGaO2. Here, we show that both properties are results of a large disparity between the fundamental gap and the apparent optical gap, a finding that could lead to a breakthrough in the study of bipolarly dopable wide-gap semiconductor oxides.read more
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Computational materials design for superconductivity in hole-doped delafossite CuAlO2 : Transparent superconductors
TL;DR: In this article, the superconducting critical temperature of hole-doped delafossite CuAlO2 was calculated based on first-principles calculations, and it was shown that the hole-druged CuO2 can become a phonon-mediated high-T c superconductor with T c ≃ 50 K.
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Electrical and optical properties of epitaxial transparent conductive BaCuTeF thin films deposited by pulsed laser deposition
TL;DR: In this paper, p-type conductive BaCuTeF thin films are obtained in situ by pulsed laser deposition in ultra-high vacuum and in Ar ambient up to 1.5 × 10−3 −3 −Torr on singlecrystal MgO (100) substrates above 500°C.
Journal ArticleDOI
Wide band gap p-type nanocrystalline CuBO2 as a novel UV photocatalyst
TL;DR: In this paper, a wide band gap copper based delafossite CuBO2 nanocrystalline powders of different particle sizes were synthesized via sol-gel route and structural characterization was performed using X-ray diffraction (XRD) and transmission electron microscopy (TEM).
Journal ArticleDOI
Electrical and structural characteristics of non-stoichiometric Cu-based delafossites
Nathan A. Ashmore,David P. Cann +1 more
TL;DR: In this paper, non-stoichiometric CuxGaO2 polycrystalline ceramics were prepared using solid-state synthesis methods and their structural and electrical properties were characterized as a function of x.
Journal ArticleDOI
Computational and Experimental Study of Ta2O5 Thin Films
Sanjayan Sathasivam,Benjamin A. D. Williamson,Andreas Kafizas,Shaeel A. Al-Thabaiti,Abdullah Y. Obaid,Sulaiman N. Basahel,David O. Scanlon,Claire J. Carmalt,Ivan P. Parkin +8 more
TL;DR: In this paper, the authors reported the synthesis of amorphous Ta2O5 and the subsequent isolation of the orthorhombic (β) crystallographic phase, using aerosol-assisted chemical vapor deposition.