Photoelectrochemistry of cadmium sulfide. 1. Reanalysis of photocorrosion and flat-band potential

Meißner, D.; Memming, R.; Kastening, B.

doi:10.1021/j100323a032

Cited by 363 publications

(234 citation statements)

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“…However, the dependence of conduction and valence bands for CdS on pH is merely −33 mV per pH. [ 41,47 ] This indicates that the difference between the conduction bands of semiconductor and water redox potential is meaningfully reduced at high pH values, and thereby the driving force for hydrogen evolution is signifi cantly limited. [ 41 ] Taking pH = 12, the difference between the conduction bands of semiconductor and water redox potential is reduced ≈0.3 eV.…”

Section: Doi: 101002/adma201600437mentioning

confidence: 99%

Strongly Coupled Nafion Molecules and Ordered Porous CdS Networks for Enhanced Visible‐Light Photoelectrochemical Hydrogen Evolution

et al. 2016

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Strongly coupled Nafion molecules and ordered porous CdS networks are fabricated for visible-light photoelectrochemical (PEC) hydrogen evolution. The Nafion layer coating shifts the band position of CdS upward and accelerates charge transfer in the photoelectrode/electrolyte interface. It is highly expected that the strong coupling effect between organic and inorganic materials will provide new routes to advance PEC water splitting.

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Section: Doi: 101002/adma201600437mentioning

confidence: 99%

Strongly Coupled Nafion Molecules and Ordered Porous CdS Networks for Enhanced Visible‐Light Photoelectrochemical Hydrogen Evolution

et al. 2016

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“…The measurements were performed in a polysulfide solution (1 M NaOH, 1 M Na 2 S and 50 mM S) of the type used to stabilize CdX photoanodes (X ) S, Se; see refs [37][38][39][40][41]. All materials showed negative photopotentials at open circuit and anodic photocurrents, as typical of n-type semiconductors.…”

Section: Systematic Investigation Of the Ternary Sulfide Obtained Witmentioning

confidence: 99%

Ternary CdS_xSe₁_-_x Deposited on Ag(111) by ECALE: Synthesis and Characterization

Milani

Loglio

et al. 2005

Langmuir

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Morphology and electronic properties of CdS, CdSe, and the ternary compounds of formula CdSxSe1-x deposited on Ag(111) by ECALE have been characterized as a function of the composition. The number of the attainable x values is limited by the necessity of using well-defined CdS/CdSe deposition sequences. However, the quantitative analysis carried out by XPS and electrochemical stripping experiments indicates that the ECALE method has a good control on composition. The AFM images together with the electrochemical characterization indicate both two-dimensional and three-dimensional growth contributions.The photospectra recorded at CdS film electrodes in liquid junction with an alkaline (poly)sulfide electrolyte show good efficiency of photoconversion and band gap typical of the single crystal. Lower photoconversion efficiency and the presence of subband gap response are observed for CdSe; a possible reason is some crystalline disorder due to lower control of the layer-by-layer deposition in the case of Se. The dependence of band gap on composition of ternary CdSxSe1-x ECALE films is monotonic and in agreement with literature data reported for bulk materials. IntroductionThe interest in the electrochemical deposition of group II-VI compounds, in particular cadmium chalcogenides, stems from its ability to produce good quality materials with a relatively simple, soft procedure, operating at low temperature. Literature reports include preparation of layers of different thickness on various substrates, for potential applications going from solar energy conversion 1-3 to optoelectronics. 4,5 Recently, the electrochemical atomic layer epitaxy (ECALE) method has been proposed by Stickney and co-workers 6,7 for the deposition of well ordered group II-VI compounds. In the ECALE procedure, a binary compound is obtained by alternating the layerby-layer underpotential deposition of the metallic and nonmetallic elements. 6,7 The approach, initially developed for polycrystalline as well as for single-crystal gold substrates, was extended by our group to Ag(111) substrate. 8,9 One major advantage of ECALE method consists of the possibility of optimizing separately the different steps of the alternate electrodeposition by adjusting the solution and potential parameters.The deposition of ternary group II-VI compounds offers the possibility of tuning the band gap to meet specific

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“…Evidently, the noble metals like Pt or metal oxides like RuO 2 perfectly satisfy these requirements thanks to their outstanding chemical robustness. Alternatively, the transition metal chacolgenides like MoS 2 [92], MoS x [35,93], MoSe a [94,95], Cu 2 MoS 4 [57,96], phosphides [97,98], and carbides [99,100] are promising candidates to replace the above noble metal based catalysts in perspective of creating a viable device for the large scale H 2 generation. activity is slowly degraded over time.…”

Section: Catalyst Requirementmentioning

confidence: 99%

Current perspectives in engineering of viable hybrid photocathodes for solar hydrogen generation

Thuy

et al. 2018

Adv. Nat. Sci: Nanosci. Nanotechnol.

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Photoelectrochemical water splitting represents an attractive technological solution to harvest and then store the solar energy which is abundant but intermittent. It can be achieved by employing a photoelectrochemical cell, also called an artificial leaf. In order to construct viable photoeclectrochemical cells, efforts are being dedicated to engineer robust and efficient photocathodes for solar H 2 generation and photoanodes for solar water oxidation reaction. In this article, we discuss on the recent achievements and current perspectives in engineering of viable hybrid photocathodes. The state of the art on the design of a hybrid photocathode, its performance as well as the current understanding of its mechanistic operation will be first described. We then discuss on the technical strategies that are currently being developed to enhance the robustness and performance of a hybrid photocathode.

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Photoelectrochemistry of cadmium sulfide. 1. Reanalysis of photocorrosion and flat-band potential

Cited by 363 publications

References 0 publications

Strongly Coupled Nafion Molecules and Ordered Porous CdS Networks for Enhanced Visible‐Light Photoelectrochemical Hydrogen Evolution

Strongly Coupled Nafion Molecules and Ordered Porous CdS Networks for Enhanced Visible‐Light Photoelectrochemical Hydrogen Evolution

Ternary CdS_xSe₁_-_x Deposited on Ag(111) by ECALE: Synthesis and Characterization

Current perspectives in engineering of viable hybrid photocathodes for solar hydrogen generation

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Photoelectrochemistry of cadmium sulfide. 1. Reanalysis of photocorrosion and flat-band potential

Cited by 363 publications

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Strongly Coupled Nafion Molecules and Ordered Porous CdS Networks for Enhanced Visible‐Light Photoelectrochemical Hydrogen Evolution

Strongly Coupled Nafion Molecules and Ordered Porous CdS Networks for Enhanced Visible‐Light Photoelectrochemical Hydrogen Evolution

Ternary CdSxSe1-x Deposited on Ag(111) by ECALE: Synthesis and Characterization

Current perspectives in engineering of viable hybrid photocathodes for solar hydrogen generation

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Ternary CdS_xSe₁_-_x Deposited on Ag(111) by ECALE: Synthesis and Characterization