Surface chemistry of carbon removal from indium tin oxide by base and plasma treatment, with implications on hydroxyl termination

Chaney, John A.; Koh, Sharon E; Dulcey, C. S.; Pehrsson, Pehr E.

doi:10.1016/s0169-4332(03)00617-2

Cited by 28 publications

(16 citation statements)

References 37 publications

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“…Above the critical angle, light is totally internally reflected and only the lower energy surface plasmon band ͑ sp ͒ is observed. The primary plasma band ͑ p ͒ in ITO has been measured to be ϳ0.8 eV using highresolution energy loss spectroscopy, 37 which agrees well with the optical signatures measured using FTIR reflectance spectroscopy.…”

supporting

confidence: 59%

Surface plasmon resonance in conducting metal oxides

Rhodes

Franzen

Maria

et al. 2006

Journal of Applied Physics

280

158

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Conductive oxide thin films: Model systems for understanding and controlling surface plasmon resonance Attenuated-total-reflection predictions to surface-plasmon resonance in a layered structure J. Appl. Phys. 98, 053708 (2005); 10.1063/1.1991977 High resolution surface plasmon resonance spectroscopy Rev. Sci. Instrum. 70, 4656 (1999); 10.1063/1.1150128Detection of surface-plasmon evanescent fields using a metallic probe tip covered with fluorescence Rev.

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supporting

confidence: 59%

Surface plasmon resonance in conducting metal oxides

Rhodes

Franzen

Maria

et al. 2006

Journal of Applied Physics

280

158

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“…The ITO surface generally exhibits oxygen. 28 The reduction process creates oxygen vacancies in both the surface and lattice of ITO materials. The high degree of reduction causes a decrease in the total potential charge of the ITO surface due to the partial removal oxygen on the surface.…”

Section: Resultsmentioning

confidence: 99%

Solvent effect on synthesis of indium tin oxide nano-powders by a solvothermal process

Lee

Choi

2005

Journal of the European Ceramic Society

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“…The spectra were calibrated at the Fermi edge, which is the energy of the fastest emitted electron. [13,38] The atomic concentration of carbon on the surface of the reference (untreated TiO 2 ) was 33.5 at% and after plasma mineralization with volume DBD and coplanar DBD reached approx. To separate the secondary electron cut-off of the samples from that of the detector, a negative bias was applied to the samples.…”

Section: Characterization Of the Mesoporous Tio 2 Photoanodementioning

confidence: 99%

“…It is well known that plasma treatments lead to the removal of the carbon impurities from the surface and to the formation of functional groups onto the surface. [13,38] The atomic concentration of carbon on the surface of the reference (untreated TiO 2 ) was 33.5 at% and after plasma mineralization with volume DBD and coplanar DBD reached approx. 23.1 and 21.1 at%, respectively.…”

Section: Characterization Of the Mesoporous Tio 2 Photoanodementioning

confidence: 99%

Mineralization of flexible mesoporous TiO₂ photoanodes using two low‐temperature dielectric barrier discharges in ambient air

Shekargoftar

Dzik

Ďurašová

et al. 2018

Contributions to Plasma Physics

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Two types of dielectric barrier discharges (DBDs), volume DBD (called Industrial Corona) and coplanar DBD, were used for low temperature (70 • C) atmospheric pressure plasma mineralization of mesoporous methyl-silica/titanium dioxide nanocomposite photoanodes. The photoanodes with a thickness of approx. 300 nm were inkjet-printed on flexible polyethylene terephthalate (PET) foils. Plasma treatments of both DBDs led to changes in the chemical stoichiometry and morphology of the mesoporous photoanodes, resulting in a significant increase of the work function from approx. 4.0 to 4.3 eV and 4.8 eV, after plasma mineralization with volume DBD and coplanar DBD, respectively. We also studied the effect of plasma mineralization on the photoelectrochemical properties of the flexible mesoporous TiO 2 photoanodes. Plasma mineralization with volume DBD and coplanar DBD showed different effects on the generated photocurrent in the photoanodes. Although the plasma mineralization with volume DBD showed only a minor effect on the photocurrent, plasma mineralization with coplanar DBD led to significantly higher photocurrents. We found that the enhancement of the photoelectrochemical properties was related to the homogeneity of the plasma-treated surfaces-arising from different spatial properties of the plasma between volume and coplanar DBDs. Furthermore, the results showed that plasma mineralization using coplanar DBD can effectively change the energy levels of the surface. This resulted in the enhancement of the work function and the photoelectrochemical properties of the mesoporous TiO 2 photoanodes. This contribution shows that coplanar arrangement of electrodes in DBDs generates plasma of higher efficacy compared with standard volume DBD that is currently often used in industrial processes. KEYWORDSdielectric barrier discharge (DBD), homogeneity of the treated surface, low-temperature plasma, mesoporous photoanodes, plasma mineralization INTRODUCTIONTitanium nanoparticles (TiO 2 NPs) are among the most widely used semiconductors in various applications such as water splitting, [1] photocatalysis, and energy-conversion processes. [2][3][4] TiO 2 NPs are in use as photoanodes in dye-synthesized solar cells (DSSCs), [5] and recently porous and/or compact TiO 2 layers are utilized in perovskite solar cells (PSCs).[6] TiO 2 NPs have been deposited using a variety of techniques, including deposition from vapour and liquid phases. [7][8][9] As the deposited NPs possess a large absorbing area, the TiO 2 layer is often contaminated by the adventitious organic impurities from the ambient

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Surface chemistry of carbon removal from indium tin oxide by base and plasma treatment, with implications on hydroxyl termination

Cited by 28 publications

References 37 publications

Surface plasmon resonance in conducting metal oxides

Surface plasmon resonance in conducting metal oxides

Solvent effect on synthesis of indium tin oxide nano-powders by a solvothermal process

Mineralization of flexible mesoporous TiO₂ photoanodes using two low‐temperature dielectric barrier discharges in ambient air

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Surface chemistry of carbon removal from indium tin oxide by base and plasma treatment, with implications on hydroxyl termination

Cited by 28 publications

References 37 publications

Surface plasmon resonance in conducting metal oxides

Surface plasmon resonance in conducting metal oxides

Solvent effect on synthesis of indium tin oxide nano-powders by a solvothermal process

Mineralization of flexible mesoporous TiO2 photoanodes using two low‐temperature dielectric barrier discharges in ambient air

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Mineralization of flexible mesoporous TiO₂ photoanodes using two low‐temperature dielectric barrier discharges in ambient air