Semiconducting and atomic properties of the mixed conductor $alpha;-Ag2S

Ohachi, T.; Imai, Seiji; Tanaka, Tokuya; Yamai, H.; Taniguchi, I.

doi:10.1016/0167-2738(88)90349-9

Cited by 15 publications

(5 citation statements)

References 14 publications

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“…A similar trend was observed also in the photodeposition of CdS . The steep increase in E g at t p < 2 h possibly results from the size quantization effect of Ag 2 S particles, since the effective masses of the electrons (≈0.15 m 0 ) and holes (≈0.30 m 0 ) are fairly small. Recently, the blue shift in the absorption edge in the Ag 2 S colloid system with a particle size smaller than 10 nm has been attributed to the quantum confinement effect …”

Section: Resultssupporting

confidence: 76%

Photodeposition of Ag₂S Quantum Dots and Application to Photoelectrochemical Cells for Hydrogen Production under Simulated Sunlight

et al. 2011

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UV light irradiation of TiO(2) (λ > 320 nm) in a mixed solution of AgNO(3) and S(8) has led to the formation of Ag(2)S quantum dots (QDs) on TiO(2), while Ag nanoparticles (NPs) are photodeposited without S(8). Photoelectrochemical measurements indicated that the Ag(2)S photodeposition proceeds via the preferential reduction of Ag(+) ions to Ag(0), followed by the chemical reaction with S(8). The application of this in situ photodeposition technique to mesoporous (mp) TiO(2) nanocrystalline films coated on fluorine-doped SnO(2) (FTO) electrodes enables formation of Ag(2)S QDs (Ag(2)S/mp-TiO(2)/FTO). Ag(2)S/mp-TiO(2)/FTO has the interband transition absorption in the whole visible region, while in the spectrum of Ag/mp-TiO(2)/FTO, a localized surface plasmon resonance absorption of Ag NPs is present centered at 490 nm. Ag(2)S QD-sensitized photoelectrochemical cells using the Ag(2)S/mp-TiO(2)/FTO and Ag/mp-TiO(2)/FTO photoanodes were fabricated. Under illumination of one sun, the Ag(2)S photoanode cell yielded H(2) at a rate of 0.8 mL·h(-1) with a total conversion efficiency of 0.29%, whereas the Ag/mp-TiO(2)/FTO photoanode is inactive.

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Section: Resultssupporting

confidence: 76%

Photodeposition of Ag₂S Quantum Dots and Application to Photoelectrochemical Cells for Hydrogen Production under Simulated Sunlight

et al. 2011

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“…Investigations by Ohachi's group 1,2,3 and our investigations 4,5,6 of superionic conductors, copper and silver chalcogenides, materials with high diffusivity of Cu and Ag atoms, enabled their promotion as new members of rather small group of materials that form equilibrium crystal shape (ECS), being the only ones that, besides 4 He form ECS of macroscopic size (spherical faceted crystals of several mm in diameter). The size is crucial for investigating the non-equilibrium processes, i.e.…”

Section: Introductionmentioning

confidence: 78%

“…Differing from the analysis of Kostianovski et al 3 , we see that besides the former first positive maximum contribution which is usually expected to be sufficient for extracting the phase information, there is still a contribution in the spectrum coming from the former first negative maximum as well, which was completely neglected in previous work 9 .…”

Section: Filtering Using the 2-dimensional Gaussian Windowmentioning

confidence: 88%

Reducing phase retrieval errors in Fourier analysis of 2-dimensional digital model interferograms

Gladić

Vučić

Lovrić

2007

Optics and Lasers in Engineering

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In order to measure the radial displacements of facets on surface of a growing spherical Cu 2-δ Se crystal with sub-nanometer resolution, we have investigated the reliability and accuracy of standard method of Fourier analysis of fringes obtained applying digital laser interferometry method. Guided by the realistic experimental parameters (density and orientation of fringes), starting from 2-dimensional model interferograms and using unconventional custom designed Gaussian filtering window and unwrapping procedure of the retrieved phase, we have demonstrated that for considerable portion of parameter space the non-negligible inherent phase retrieval error is present solely due to noninteger number of fringes within the digitally recorded image (using CCD camera). Our results indicate the range of experimentally adjustable parameters for which the generated error is acceptably small. We also introduce a modification of the (last part) of the usual phase retrieval algorithm which significantly reduces the error in the case of small fringe density.

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“…Under the stationary conditions, and for constant temperature, the density of metal atoms flow is given by [11]:…”

Section: Article In Pressmentioning

confidence: 99%

Model study of local enhancement of chemical potential gradient after facet formation on growing spherical Cu2−δSe crystals

Lovrić¹,

Vučić²,

Gladić³

2007

Journal of Crystal Growth

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Semiconducting and atomic properties of the mixed conductor $alpha;-Ag2S

Cited by 15 publications

References 14 publications

Photodeposition of Ag₂S Quantum Dots and Application to Photoelectrochemical Cells for Hydrogen Production under Simulated Sunlight

Photodeposition of Ag₂S Quantum Dots and Application to Photoelectrochemical Cells for Hydrogen Production under Simulated Sunlight

Reducing phase retrieval errors in Fourier analysis of 2-dimensional digital model interferograms

Model study of local enhancement of chemical potential gradient after facet formation on growing spherical Cu2−δSe crystals

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Semiconducting and atomic properties of the mixed conductor $alpha;-Ag2S

Cited by 15 publications

References 14 publications

Photodeposition of Ag2S Quantum Dots and Application to Photoelectrochemical Cells for Hydrogen Production under Simulated Sunlight

Photodeposition of Ag2S Quantum Dots and Application to Photoelectrochemical Cells for Hydrogen Production under Simulated Sunlight

Reducing phase retrieval errors in Fourier analysis of 2-dimensional digital model interferograms

Model study of local enhancement of chemical potential gradient after facet formation on growing spherical Cu2−δSe crystals

Contact Info

Product

Resources

About

Photodeposition of Ag₂S Quantum Dots and Application to Photoelectrochemical Cells for Hydrogen Production under Simulated Sunlight

Photodeposition of Ag₂S Quantum Dots and Application to Photoelectrochemical Cells for Hydrogen Production under Simulated Sunlight