Changes in electrochemical and photoelectrochemical properties of tin-doped indium oxide layers after strong anodic polarization

Kraft, Alexander; Hennig, H.; Herbst, Annika; Heckner, K.‐H.

doi:10.1016/0022-0728(93)03056-u

Cited by 51 publications

(46 citation statements)

References 17 publications

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“…The potential dependence of ECL for TMC, luminol and RuðbpyÞ 2þ 3 is shown in Figure 1; the peak potentials are 0.750 V (TMC), 0.685 V (luminol) and 1.485 V ðRuðbpyÞ 2þ 3 Þ: These results suggest that an applied potential of 1 V is suitable for the ECL detection of TMC and luminol, but that a more positive potential is required for RuðbpyÞ 2þ 3 : Potential cycling experiments supported the conclusion made by other investigators that potentials more anodic than 1 V cause irreversible corrosion of ITO electrodes [36,37]. CV's of RuðbpyÞ 2þ 3 obtained before and after cycling ITO electrodes from 0 to 1 V were identical, but after cycling from 0 to 1.4 V there was a decrease in peak current and increase in peak separation.…”

Section: Linear Sweep Measurements and Effect Of Applied Potential Onsupporting

confidence: 77%

“…CV's of RuðbpyÞ 2þ 3 obtained before and after cycling ITO electrodes from 0 to 1 V were identical, but after cycling from 0 to 1.4 V there was a decrease in peak current and increase in peak separation. Other investigators have shown that this result is characteristic of corrosion of ITO at the interface between the electrode and solution [36,37], and to avoid this it was decided to use a maximum potential of 1.0 V for all work carried out in the thin layer flow cell.…”

Section: Linear Sweep Measurements and Effect Of Applied Potential Onmentioning

confidence: 99%

“…Both these effects are evident in Figure 4A (DE p ¼ 0.105 V; I pa =I pc ¼ 0.92) and both become more pronounced as the doping level of the ITO decreases. ITO has been used as an electrode on many occasions both analytically [54][55][56], and as a means of studying its properties for other applications [36,37]. It has a large optical band-gap (E g ¼ 3.8 eV) and therefore it is transparent to light in the visible region of the electromagnetic spectrum.…”

Section: Ito Electrodesmentioning

confidence: 99%

See 2 more Smart Citations

Comparison Between Acridan Ester, Luminol, and Ruthenium Chelate Electrochemiluminescence

Wilson

Akhavan-Tafti²,

DeSilva³

et al. 2001

Electroanalysis

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Section: Linear Sweep Measurements and Effect Of Applied Potential Onsupporting

confidence: 77%

Section: Linear Sweep Measurements and Effect Of Applied Potential Onmentioning

confidence: 99%

Section: Ito Electrodesmentioning

confidence: 99%

See 1 more Smart Citation

Comparison Between Acridan Ester, Luminol, and Ruthenium Chelate Electrochemiluminescence

Wilson

Akhavan-Tafti²,

DeSilva³

et al. 2001

Electroanalysis

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“…To this end, the Co-Pi-functionalized Si photoanode presented here provides distinct advantages because it can be operated under benign conditions. At pH ¼ 7, a wide range of materials may be employed as a protective barrier layer of Si materials such as Fluorine-doped Tin Oxide (FTO) and ITO, which exhibit much better long-term stability at neutral pH relative to strongly acidic or alkaline conditions (57,58). Moreover, the use of crystalline Si gives latitude in sample processing at higher temperatures; namely ITO can be annealed at temperatures approaching 400°C to furnish a robust barrier layer, especially in a near-neutral pH electrolyte environment.…”

Section: Resultsmentioning

confidence: 99%

Light-induced water oxidation at silicon electrodes functionalized with a cobalt oxygen-evolving catalyst

Pijpers

Winkler

Surendranath³

et al. 2011

Proc. Natl. Acad. Sci. U.S.A.

200

194

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Integrating a silicon solar cell with a recently developed cobaltbased water-splitting catalyst (Co-Pi) yields a robust, monolithic, photo-assisted anode for the solar fuels process of water splitting to O 2 at neutral pH. Deposition of the Co-Pi catalyst on the Indium Tin Oxide (ITO)-passivated p-side of a np-Si junction enables the majority of the voltage generated by the solar cell to be utilized for driving the water-splitting reaction. Operation under neutral pH conditions fosters enhanced stability of the anode as compared to operation under alkaline conditions (pH 14) for which long-term stability is much more problematic. This demonstration of a simple, robust construct for photo-assisted water splitting is an important step towards the development of inexpensive direct solar-to-fuel energy conversion technologies.photoelectrochemical | hydrogen | solar energy | storage P hotosynthetic organisms convert the energy of sunlight into chemical energy by splitting water, producing molecular oxygen and hydrogen equivalents in the highly conserved enzyme complex photosystem II (PSII) (1). Absorbed photons are transferred to the reaction center of PSII, where a single electron/hole charge separation occurs. The oxidative power of the photo-produced hole in PSII is transferred to the oxygen evolving complex (OEC) where water splitting occurs. The electron is transferred to the adjacent photosystem I (PSI), where it participates in the reduction reaction of NAD þ into NADH, which is ultimately used to fix CO 2 . Crucial in the above configuration is the separation of the functions of light collection and conversion from catalysis. Whereas light collection/conversion generates electron/ hole pairs one at a time, water splitting is a four-electron/hole process (2, 3). Hence, the multielectron catalysts of PSII and PSI, positioned at the terminus of the photosynthetic charge-separating network, are compulsory so that the one photon-one-electron/ hole "wireless current" can be bridged to the four-electron/hole chemistry of water splitting.An artificial photosynthesis can be designed if the one-electron/hole wireless current of a semiconductor can be integrated directly with catalysts to perform the four-electron-four proton catalysis of water splitting. To this end, an important recent advance has been the creation of a cobalt-phosphate (Co-Pi) catalyst (4, 5) that captures the functional elements of the OEC of PSII (6). As in PSII OEC, the Co-Pi catalyst self-assembles upon oxidation of an earth-abundant metal [Co 2þ for Co-Pi vs. Mn 2þ for OEC (7-9)] in phosphate-buffered solutions at neutral pH (4, 10), exhibits high activity in natural water and sea water at room temperature (11), activates water by proton-coupled electron transfer (3) [as does the OEC of PSII (12, 13)], and is self-healing (14) [as is PSII (15-18)]. Moreover, X-ray Absorption Spectroscopy (XAS) studies (19,20) have established that the Co-Pi catalyst is a structural relative of PSII OEC. PSII OEC is a Mn 3 CaO 4 -Mn cubane (21) where the fourth M...

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“…such voltages can be reached in series modules [182]. This may bring issues, for instance, for flexible devices for which the substrate is typically made of ITO deposited on polyethylene naphthalate (PEN) or polyethylene terephthalate (PET).…”

Section: Chemical/photochemical Stability Of Benchmark Ruthenium Sensmentioning

confidence: 99%

A Review on Current Status of Stability and Knowledge on Liquid Electrolyte-Based Dye-Sensitized Solar Cells

Sauvage

2014

Advances in Chemistry

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The purpose of this review is to gather the current background in materials development and provide the reader with an accurate image of today's knowledge regarding the stability of dye-sensitized solar cells. This contribution highlights the literature from the 1970s to the present day on nanostructured TiO 2 , dye, Pt counter electrode, and liquid electrolyte for which this review is focused on.

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Changes in electrochemical and photoelectrochemical properties of tin-doped indium oxide layers after strong anodic polarization

Cited by 51 publications

References 17 publications

Comparison Between Acridan Ester, Luminol, and Ruthenium Chelate Electrochemiluminescence

Comparison Between Acridan Ester, Luminol, and Ruthenium Chelate Electrochemiluminescence

Light-induced water oxidation at silicon electrodes functionalized with a cobalt oxygen-evolving catalyst

A Review on Current Status of Stability and Knowledge on Liquid Electrolyte-Based Dye-Sensitized Solar Cells

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