Hydrothermal growth and characterization of zirconia nanostructures on non-stoichiometric zirconium oxide

Espinoza-González, Rodrigo; Mosquera, Edgar; Moglia, Italo; Villarroel, Roberto; Fuenzalida, V.M.

doi:10.1016/j.ceramint.2014.07.034

Cited by 15 publications

(6 citation statements)

References 27 publications

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“…At room temperature the monoclinic phase is the stable phase and it transforms to tetragonal and cubic phase at 1170 and 2370 1C, respectively. Tetragonal/ cubic ZrO 2 is most desirable for technical applications as they are considered to be more important than the monoclinic phase in fundamental and technological applications [16,17]. Therefore, preparation of stabilized tetragonal or cubic ZrO 2 (YSZ)-matrix ceramic is very crucial.…”

Section: Introductionmentioning

confidence: 99%

In-situ synthesis of Sc2W3O12/YSZ ceramic composites with controllable thermal expansion

Liu

Fan

et al. 2015

Ceramics International

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Section: Introductionmentioning

confidence: 99%

In-situ synthesis of Sc2W3O12/YSZ ceramic composites with controllable thermal expansion

Liu

Fan

et al. 2015

Ceramics International

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“… , A high reflectance rate (low absorption) of ∼94% and bandgap of 5.2 eV are obtained for the white ZrO 2 NFs (Figure a). Typical ZrO 2 materials, close to insulator, exhibit bandgaps in a broad range of 5–7 eV (Figure b) . In contrast, lower reflectance rates (higher absorption) of ∼39% and ∼9% are estimated for the brown and black ZrO 2– x NFs, corresponding to lower bandgaps of 2.21 and 2.1 eV, respectively.…”

Section: Resultsmentioning

confidence: 95%

Highly Conductive Off-Stoichiometric Zirconium Oxide Nanofibers with Controllable Crystalline Structures and Bandgaps and Improved Electrochemical Activities

Lee

Yoon

Lee

et al. 2019

ACS Appl. Energy Mater.

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The structural and morphological control of durable valve metal oxides with bandgaps over 5 eV (e.g., ZrO2) paves the way for the development of bifunctional electrochemical energy devices with both good stabilities and electronic conductivities. Herein, a tailored synthesis of highly conductive off-stoichiometric ZrO2–x nanofiber materials under a controlled reducing atmosphere is reported. The bandgap and corresponding charge conductivity of ZrO2–x are simultaneously tuned (in the range of visible colors (white, brown, and black)) by generating reduced Zr3+ and oxygen vacancies. The morphological and structural evolution of the ZrO2–x nanofibers obtained under different reducing atmospheres are investigated in detail. Electrochemical kinetics in aqueous and nonaqueous media are promoted by employing a darker ZrO2–x nanofiber electrode. The functionalizing valve metal oxides with a facile charge transfer inspire an advanced design for future electrochemical and electronic devices.

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“…4 (a) and (c). The defect levels at 3.0 and 3.5-3.8 eV can be attributed to the oxygen vacancy, while the defect levels at 4.0-4.2 eV are associated with the interstitial defects originated by missing Zr atoms in the ZrO2 [11], [15].…”

Section: Resultsmentioning

confidence: 99%

Direct Defect-Level Analysis of Metal–Insulator–Metal Capacitor Using Internal Photoemission Spectroscopy

Yoo

Hwang

Kang

et al. 2021

IEEE J. Electron Devices Soc.

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Barrier height (ϕb), trap state, bandgap (Eg), and band alignment information of the metal-ZrO2-metal capacitor have been extracted using internal photoemission (IPE) system. By correlating the IPE analysis with I-V and C-V characteristics obtained before and after rapid thermal annealing, origin and transformation of defect states have been successfully investigated. Our analysis revealed that deep-level defects originating from oxygen vacancies near the top electrode are causing of leakage current in MIM capacitor and these defects can be effectively reduced by a proper thermal annealing.

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Hydrothermal growth and characterization of zirconia nanostructures on non-stoichiometric zirconium oxide

Cited by 15 publications

References 27 publications

In-situ synthesis of Sc2W3O12/YSZ ceramic composites with controllable thermal expansion

In-situ synthesis of Sc2W3O12/YSZ ceramic composites with controllable thermal expansion

Highly Conductive Off-Stoichiometric Zirconium Oxide Nanofibers with Controllable Crystalline Structures and Bandgaps and Improved Electrochemical Activities

Direct Defect-Level Analysis of Metal–Insulator–Metal Capacitor Using Internal Photoemission Spectroscopy

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