Optical and electrical properties of CuScO2 epitaxial films prepared by combining two-step deposition and post-annealing techniques

Kakehi, Yoshiharu; Satoh, Kazuo; Yotsuya, Tsutomu; Masuko, K.; Yoshimura, Takeshi; Ashida, Atsushi; Fujimura, Norifumi

doi:10.1016/j.jcrysgro.2008.11.060

Cited by 17 publications

(7 citation statements)

References 23 publications

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“…This value is in the reported proximity of 3.3-3.75 eV. 14,22,23 3.4 Hall effect measurement at low temperature As well as the high infrared transparency, CSO lm on a-plane sapphire substrate exhibits good electric conductive characteristic. The temperature dependences of the electrical resistivity, carrier concentration, and Hall mobility of the lm were measured between 90 and 300 K, as shown in Fig.…”

Section: Optical Measurements Of the Lmsupporting

confidence: 54%

“…The temperature dependence of the electrical transport properties of the lm exhibited similar semiconducting characteristics as those of the CSO[3R](0001) epitaxial lm. 22,24 The increase in the carrier concentration and the decrease in the Hall mobility and electrical resistivity of the lm were observed with increasing temperature. The Hall coefficient of the CSO lm is +5.57 cm 3 C À1 at room temperature, indicating p-type conduction characteristic.…”

Section: Optical Measurements Of the Lmmentioning

confidence: 94%

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Epitaxial growth of highly infrared-transparent and conductive CuScO₂ thin film by polymer-assisted-deposition method

Chuai

Shen

et al. 2015

RSC Adv.

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As an important wide bandgap p-type conductive delafossite material, CuScO2 (CSO) has been intensively investigated for its wide applications in multi-functional optoelectronic devices. In order to obtain both high infrared (IR) transparency and low resistivity, we report on, for the first time, the experimental preparation of single phase epitaxial CSO thin film by using polymer-assisted-deposition (PAD) method. As a key point in the PAD process, the used polymer materials (PEI and EDTA) not only control the desired viscosity for the process, but also bind the metal ions to prevent premature precipitation and formation of metal oxide oligomers. The technique results in a homogeneous distribution of the metal precursors in the solution as well as the formation of uniform metal organic film. Due to the uniaxial locked epitaxy mechanism, the epitaxial growth of CSO (0001) thin film on a-plane sapphire is achieved, and the orientation relationship of the film with respect to the substrate are confirmed to be CSO[3R](0001)//a−Al2O3( 1120 ). The obtained CSO thin film from the PAD technique exhibits a low electrical resistivity of 1.047 Ω•cm at room temperature, and a high transmittance of 65-85% in the near-IR range and more than 85% in the mid-IR range. The presented technique does provide the possibility of preparing high-crystallinity oxide films which can be applicable over a wide wavelength rangefromvisible band to infrared band.

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Section: Optical Measurements Of the Lmsupporting

confidence: 54%

Section: Optical Measurements Of the Lmmentioning

confidence: 94%

Epitaxial growth of highly infrared-transparent and conductive CuScO₂ thin film by polymer-assisted-deposition method

Chuai

Shen

et al. 2015

RSC Adv.

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“…Cu-based delafossites have attracted attention due to their expected large hole mobility, a result of the mixing of Cu 3d and O 2p states forming the valence band. 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], lumine...…”

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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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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“…Thus far, several Cu-base delafossites have been reported such as CuFeO 2 [11], CuGaO 2 [12], CuInO 2 [13], CuScO 2 [14], CuCrO 2 [15][16][17] and Mg-doped CuCrO 2 and so on [18][19][20][21][22]. As we all known, most delafossite films were prepared by pulsed laser deposition (PLD) [23], sputtering [24], electron beam evaporation [25] and chemical vapor deposition (CVD) [26,27] and so on.…”

Section: Introductionmentioning

confidence: 99%

Structural, optical and electrical properties of Mg-doped CuCrO2 thin films by sol–gel processing

Wang

et al. 2011

Journal of Alloys and Compounds

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Optical and electrical properties of CuScO2 epitaxial films prepared by combining two-step deposition and post-annealing techniques

Cited by 17 publications

References 23 publications

Epitaxial growth of highly infrared-transparent and conductive CuScO₂ thin film by polymer-assisted-deposition method

Epitaxial growth of highly infrared-transparent and conductive CuScO₂ thin film by polymer-assisted-deposition method

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

Structural, optical and electrical properties of Mg-doped CuCrO2 thin films by sol–gel processing

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Optical and electrical properties of CuScO2 epitaxial films prepared by combining two-step deposition and post-annealing techniques

Cited by 17 publications

References 23 publications

Epitaxial growth of highly infrared-transparent and conductive CuScO2 thin film by polymer-assisted-deposition method

Epitaxial growth of highly infrared-transparent and conductive CuScO2 thin film by polymer-assisted-deposition method

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

Structural, optical and electrical properties of Mg-doped CuCrO2 thin films by sol–gel processing

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Product

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Epitaxial growth of highly infrared-transparent and conductive CuScO₂ thin film by polymer-assisted-deposition method

Epitaxial growth of highly infrared-transparent and conductive CuScO₂ thin film by polymer-assisted-deposition method