Hole-doping effect on the magnetic state of delafossite oxide CuCrO<sub>2</sub>

Okuda, Takashi; Beppu, Y.; Fujii, Yukiko; Kishimoto, Taizo; Uto, Kazuma; Onoe, T.; Jufuku, N.; Hidaka, S.; Terada, Norio; Miyasaka, S.

doi:10.1088/1742-6596/150/4/042157

Cited by 22 publications

(29 citation statements)

References 8 publications

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“…and induces weak ferromagnetism. The randomness introduced by the substitution leads to a decrease in conductivity [141,143] Fe 3? Slight improvement of electrical and optical properties.…”

Section: Intrinsic Dopingmentioning

confidence: 99%

“…It has been reported that this delafossite structure allows the hosting of a multitude of M cations, namely p-block elements (Al [49,103,104], B [105][106][107], Ga [54,108,109] or In [110][111][112][113]), transition metals (Co [114,115], Cr [82,116,117], Fe [118][119][120], Mn [121,122], Rh [123], Sc [124][125][126] and Y [89,[126][127][128]), or lanthanides (La [129][130][131], Nd [132], Pr [133], Sm and Eu [134]). These materials were thoroughly investigated as they demonstrated interesting properties in the different fields: antibacterial [135,136], batteries [137], (photo)catalyse [83,131,[138][139][140], luminescence [130], magnetic …”

Section: Graphical Abstract Introductionmentioning

confidence: 99%

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A review on the p-type transparent Cu–Cr–O delafossite materials

et al. 2022

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Transparent conductive oxides (TCOs) constitute a class of materials that combine high electrical conductivity and optical transparency. These features led to the development of the transparent electronics applications, such as flat panel displays, “smart” windows or functional glasses. N-type TCOs dominate the applications market, and the lack of a suitable p-type counterpart limits the fabrication of a completely transparent active device, which might be considered as a technological breakthrough. Among the wide range of p-type candidates, delafossite CuCrO2 (and its out-of-stoichiometry derivatives) is a promising material to achieve the desired p-type TCO properties as, up to date, it is presenting the foremost trade-off between optical and electrical properties. The present paper covers the research work and the major achievements related to copper chromium delafossite. A comprehensive overview of fabrication methods and opto-electronic properties is presented. The source of doping and the charge carriers transport mechanism are also thoroughly discussed. Graphical abstract

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“…and induces weak ferromagnetism. The randomness introduced by the substitution leads to a decrease in conductivity [141,143] Fe 3? Slight improvement of electrical and optical properties.…”

Section: Intrinsic Dopingmentioning

confidence: 99%

Section: Graphical Abstract Introductionmentioning

confidence: 99%

A review on the p-type transparent Cu–Cr–O delafossite materials

et al. 2022

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“…In the condensed matter physics community, CuCrO 2 has been investigated for its unusual magnetic properties, due to its frustrated antiferromagnetic ordering and multiferroic properties. [20][21][22][23][24][25][26][27][28][29][30] It has generated interest due to its catalytic abilities in hydrogenation reactions, 31 its ozone sensing properties, 32,33 and as a possible thermoelectric material. 34,35 CuCrO 2 has also been identified as a possible photocatalyst for hydrogen evolution, 36 NO À 2 37 and NO À 3 38 removal, and removal of M 2+ (M ¼ Ni, Cu, Zn, Cd, Hg).…”

Section: Introductionmentioning

confidence: 99%

Understanding the p-type defect chemistry of CuCrO2

2011

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CuCrO 2 is the most promising Cu-based delafossite for p-type optoelectronic devices. Despite this, little is known about the p-type conduction mechanism of this material, with both Cu I /Cu II and Cr III /Cr IV hole mechanisms being proposed. In this article we examine the electronic structure, thermodynamic stability and the p-type defect chemistry of this ternary compound using density functional theory with three different approaches to the exchange and correlation; the generalized-gradient-approximation of Perdew, Burke and Ernzerhof (PBE), PBE with an additional correction for on-site Coulombic interactions (PBE + U) and the nonlocal, screened-exchange hybrid functional HSE06. The fundamental band gap of CuCrO 2 is demonstrated to be indirect in nature. Under all growth conditions, the dominant intrinsic p-type defect will be the Cu vacancy, with hole formation centered solely on the Cu sublattice. Mg doping is found to be significantly lower in energy than intrinsic defect formation, explaining the large increases in conductivity seen experimentally. Cu-rich/Cr-poor growth conditions are found to be optimal for both intrinsic and extrinsic (Mg doping) defect formation, and should be adopted to maximize performance.

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“…Related studies on delafossite oxides are interested not only in examining the TCOs properties but also in exploring their applications as photo catalysts for hydrogen evolution [4] and NO 2 removal [5], catalysts for steam reforming process [6] and exhaust gas purification [7], room temperature ozone sensors [8], magnetics [9], and thermoelectric devices [10].…”

Section: Introductionmentioning

confidence: 99%