Optical bandgap modulation and magnetic characterization of Fe-doped CuCrO2 nanopowders

Shi, Wangzhou; Liu, Aiyun

doi:10.1016/j.jallcom.2012.03.059

Cited by 16 publications

(3 citation statements)

References 19 publications

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“…For instance, novel p-n diodes could be developed by converting n-type ZnO to its p-type form [4,5]. P-type TCO delafossite CuCrO 2 exhibits optoelectronic, catalytic, and magnetic properties, as well as potential for development and applications [6,7]. Because thin-film materials are crucial components of various products, CuCrO 2 thin films were focused on in this study.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characteristics of Zn-Doped CuCrO2 Transparent Conductive Thin Films

Chen

2019

Coatings

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The effects of doping a p-type CuCrO2 film with zinc on its structural and optoelectronic properties were investigated by experiments using CuCr1−xZnxO2 thin films (x = 0, 0.025, 0.065, 0.085). An increase in the amount of zinc dopant in the thin films affected the lattice constant and increased its Gibbs free energy of phase transformation. Cross-sectional images of the CuCrO2 thin film samples exhibited a dense polygonal microstructure and a surface morphology with protruding nanoscale granules. With the increase in the amount of Zn dopant, the surface roughness decreased, thereby increasing the amount of incident photons as well as the visible-light transmittance and ultraviolet-light absorption of the thin films. With the zinc doping in the CuCrO2 thin films, the band gap increased from 3.09 to 3.11 eV. The substitution of Cr3+ with Zn2+ forms hole carriers in the crystals, which was demonstrated by X-ray photoelectron spectroscopy and Hall effect measurements. The conductivities and carrier concentrations of the Zn-doped CuCrO2 thin films were greater than those of undoped CuCrO2. The CuCr1−xZnxO2 film (x = 0.065) exhibited the best optoelectronic properties; its carrier concentration and resistivity were 1.88 × 1017 cm−3 and 3.82 Ωcm, respectively.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Characteristics of Zn-Doped CuCrO2 Transparent Conductive Thin Films

Chen

2019

Coatings

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“…The lattice parameters were determined by using the MDI Jade software(Jade 6 XRD Pattern Processing Software). Obviously, the interlayer distance (c) increases with the increase of Fe doping content, which can be due to the larger ionic radium of Fe 3+ (0.65 Å) than that of V 4+ (0.58 Å) [26,27]. It can be clearly seen that all the four samples exhibit hierarchical flower-like microsphere morphologies, which are composed of end-connected nanosheets.…”

Section: Electrochemical Measurementsmentioning

confidence: 92%

Hydrothermal Synthesis of Flower-like Fe-doped VO2(B) with Enhanced Lithium Ion Storage Performance

Zou¹

2018

International Journal of Electrochemical Science

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Flower-like Fe x VO 2 (B) samples (x=0-0.045mol%) have been successfully fabricated via a hydrothermal method followed with annealing in argon atmosphere at 350℃ for 1 h. The physical properties of the prepared samples were analyzed by XRD, XPS, FESEM, and EDS analyses. The electrochemical properties of the prepared samples were characterized by cyclic voltammetry(CV), electrochemical impedance spectroscopy (EIS), and charge-discharge tests. The results demonstrated that Fe doping could enhance the electrochemical reaction reversibility, decrease charge transfer resistance, and increase the specific capacity of VO 2 (B). In particular, the Fe 0.03 VO 2 (B) sample showed the best lithium storage performance with initial discharge capacity of 306 mAh g-1 at the current density of 0.1 C in the voltage range from 1.5 to 4.0 V, much higher than that (195 mAh g-1) of the pure VO 2 (B).

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“…Especially, investigations on transition metal doped semiconductors such as ZnO, [6][7][8] TiO 2 , 9 SnO 2 , 10 CuCrO 2 11 and CeO 2 [12][13][14][15] have been in progress, aiming for exploring potential functional diluted magnetic materials used for spin injection and spin pump. Among the above mentioned systems, CeO 2 has attracted extensive attentions due to its diverse pronounced properties.…”

Section: Introductionmentioning

confidence: 99%

Comparing study of magnetic properties of Co–CeO₂ thin films with (111) and (100) preferred orientations

Song

2013

Materials Research Innovations

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In recent years, diluted magnetic oxides (DMOs) have been intensively studied aiming for using for spin injection and transportation. In this paper, DMOs of cobalt doped CeO 2 (CCO) films with varied cobalt content (0-10%) were fabricated on Al 2 O 3 (0001) substrates by both pulsed laser deposition (PLD) and magnetron sputtering respectively. Pulsed laser deposited and sputtered CCO films showed CeO 2 (111) and (100) preferred orientations respectively. These two types of films with different crystallinity had almost the same magnetic and magneto-optical properties, such as room temperature ferromagnetism, non-linearly dependent of the moments on cobalt content, anisotropic magnetisation with an easy axis in out of plane direction and giant Faraday effect. The largest Faraday rotation value of y4500u cm 21 at 650 nm wavelength was obtained, for both PLD and magnetron sputtered films. The successful fabrication of ferromagnetic CCO films with controllable preferred orientations on Al 2 O 3 (0001) substrates would be useful to facilitate epitaxial multilayered thin film devices fabrication.

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Optical bandgap modulation and magnetic characterization of Fe-doped CuCrO2 nanopowders

Cited by 16 publications

References 19 publications

Synthesis and Characteristics of Zn-Doped CuCrO2 Transparent Conductive Thin Films

Synthesis and Characteristics of Zn-Doped CuCrO2 Transparent Conductive Thin Films

Hydrothermal Synthesis of Flower-like Fe-doped VO2(B) with Enhanced Lithium Ion Storage Performance

Comparing study of magnetic properties of Co–CeO₂ thin films with (111) and (100) preferred orientations

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Optical bandgap modulation and magnetic characterization of Fe-doped CuCrO2 nanopowders

Cited by 16 publications

References 19 publications

Synthesis and Characteristics of Zn-Doped CuCrO2 Transparent Conductive Thin Films

Synthesis and Characteristics of Zn-Doped CuCrO2 Transparent Conductive Thin Films

Hydrothermal Synthesis of Flower-like Fe-doped VO2(B) with Enhanced Lithium Ion Storage Performance

Comparing study of magnetic properties of Co–CeO2 thin films with (111) and (100) preferred orientations

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Comparing study of magnetic properties of Co–CeO₂ thin films with (111) and (100) preferred orientations