Photoelectrochemical solar energy conversion

Memming, R.

doi:10.1007/bfb0018072

Cited by 105 publications

(39 citation statements)

References 109 publications

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“…These measurements were performed with solutions of very low pH (1 M Hel) in order to avoid any limitations by proton transportation. Similar observations have been made with several semiconductor electrodes [24]. In a further experiment we investigated the shift of the flatband potential by using a solution of somewhat higher pH (pH 3) where the cathodic photocurrent can also be limited by the transport of protons toward the electrode at low rotation speeds as it has already been observed with ntype electrodes.…”

Section: Measurements With P-gaas Electrodesmentioning

confidence: 55%

Analysis of the Hydrogen Formation at GaAs Electrodes by Impedance Spectroscopy Investigations

Uhlendorf

Reineke‐Koch

Memming

1995

Ber Bunsenges Phys Chem

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The kinetics of the hydrogen formation from protons as well as from water has been studied over a large potential range by measuring the interfacial current and the impedance spectrum in dependence of the electrode potential simultaneously. According to a quantitative analysis of the experimental data a semilogarithmic plot of the current j versus the potential across the space charge region I/J sc yielded a straight line of an ideal slope of 60 mY/decade. In addition it was found that the j-I/J sc behavior at n-GaAs electrodes can be described by the thermionic emission model, i.e., the electron transfer rate is controlled by the electron transport across the space charge region. From this result it has been concluded that the reduction of protons is an extremely fast process.The mechanism and the consequences of this surprising result are discussed in detail.

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Section: Measurements With P-gaas Electrodesmentioning

confidence: 55%

Analysis of the Hydrogen Formation at GaAs Electrodes by Impedance Spectroscopy Investigations

Uhlendorf

Reineke‐Koch

Memming

1995

Ber Bunsenges Phys Chem

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“…Photochemical reduction of CO 2 may be considered the reverse reaction of the widely utilized photochemical degradation of organic species [54][55][56][57][58][59][60], which has been studied in a more extensive way. It is thus useful to recall some aspects of the photochemical processes occurring on photocatalysts to destroy organic pollutants through oxidation.…”

Section: Photochemical Reduction Of Comentioning

confidence: 99%

Transformation of Carbon Dioxide to Useable Products through Free Radical‐Induced Reactions

Dey¹

2014

Green Carbon Dioxide

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“…The basic principles of semiconductor electrochemistry are described in several review papers (e.g., [55,57,60,61]) and a few text books [56,58,62,63]. The important equations and fundamentals have been summarized and an appropriate terminology was recommended by IUPAC [55].…”

Section: Principles Of Photoelectrochemical Solar Energy Conversionmentioning

confidence: 99%

“…Besides the semiconductor solid-state contacts used in photovoltaics, the semiconductor -electrolyte contact can also be used for conversion of light energy into electric power [55][56][57][58][59][60][61][62][63]. However, in semiconductor electrochemistry, a charge transfer from the electrode to the electrolyte has to take place in addition to the current flow through Figure 51.…”

Section: Photoelectrochemical Solar Energy Conversionmentioning

confidence: 99%