Photoelectrochemical Properties of Semiconductor/electrolyte Interfaces PDF Download
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Author: Mou-Shiung Lin
Publisher:
ISBN:
Category : Semiconductors
Languages : en
Pages : 168
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Author: Mou-Shiung Lin
Publisher:
ISBN:
Category : Semiconductors
Languages : en
Pages : 168
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Author: Pavel P. Konorov
Publisher: Princeton University Press
ISBN: 9780691121765
Category : Mathematics
Languages : en
Pages : 204
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Author: R. Mantz
Publisher: The Electrochemical Society
ISBN: 1566778174
Category : Science
Languages : en
Pages : 99
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Book Description
The papers included in this issue of ECS Transactions were originally presented in the symposium ¿Semiconductor Electrolyte Interface and Photoelectrochemistry¿, held during the 216th meeting of The Electrochemical Society, in Vienna, Austria from October 4 to 9, 2009.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 63
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Materials based on modified transition metal oxide semiconductors for the photoelectrochemical decomposition of H2O were investigated. Single crystals of TiO2 doped with VO2 were made and it was demonstrated that the bandgap was decreased from 3.03 eV to 1.99 eV. The flatband potential was increased from -1. 0 V to 0,25 V. Both effects are attributed to the existence of an empty vanadium d-band located in the TiO2 bandgap. Another approach was taken with FeTiO3-Fe203 alloys in the form of amorphous thin films and single crystals, where it was anticipated that the charge-transfer interactions observed in such alloys could be exploited in the materials' photoelectrochemical properties. The effect of FeTiO3 had very little effect on the overall properties of FE2O3 single crystals. On the other hand the effect on the Fe/Ti oxide thin films was quite dramatic. Optical absorption, photoconductivity and photoelectrolytic spectral measurement demonstrate a photometric enhancement at energies above the bandgap for Ti concentrations in the range of 5% to 8%. There is some suggestion that the bandgap has been reduced in this concentration regime. Higher concentrations of Ti result in a change from n-type to p-type. Efficiency and stability of thermally oxidized Fe/Ti oxide films are comparable to single crystal results. Keywords include: Photoelectrolysis, Photoanode, Transition metal semiconductor, TiO, VO2, FE2O3, FeTiO3, Reduced bandgap, Charge transfer absorption, Amorphoous film, and Photoconductivity.
Author: A. Aruchamy
Publisher: Springer Science & Business Media
ISBN: 9401513015
Category : Science
Languages : en
Pages : 367
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This volume aims at bringing together the results of extensive research done during the last fifteen years on the interfacial photoelectronic properties of the inorganic layered semiconducting materials, mainly in relation to solar energy conversion. Significant contributions have been made both on the fundamental aspects of interface characteristics and on the suitability of the layered materials in photoelectrochemical (semiconductor/electrolyte junctions) and in solid state photovoltaic(Schottky and p-n junctions) cells. New insights into the physical and chemical characteristics of the contact surfaces have been gained and many new applications of these materials have been revealed. In particular, the basal plane surface of the layered materials shows low chemical reactivity and specific electronic behaviour with respect to isotropic solids. In electrochemical systems, the inert nature of these surfaces characterized by saturated chemical bonds has been recognized from studies on charge transfer reactions and catalysis. In addition, studies on the role of the d-band electronic transitions and the dynamics of the photogene rated charge carriers in the relative stability of the photoelectrodes of the transition metal dichalcogenides have deepened the understanding of the interfacial photoreactions. Transition metal layered compounds are also recognized as ideal model compounds for the studies Involving surfaces: photoreactions, adsorption phenomena and catalysis, scanning tunneling microscopy and spectroscopy and epitaxial growth of thin films. Recently, quantum size effects have been investigated in layered semiconductor colloids.
Author: Roel van de Krol
Publisher: Springer Science & Business Media
ISBN: 146141380X
Category : Technology & Engineering
Languages : en
Pages : 322
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Book Description
Photoelectrochemical Hydrogen Production describes the principles and materials challenges for the conversion of sunlight into hydrogen through water splitting at a semiconducting electrode. Readers will find an analysis of the solid state properties and materials requirements for semiconducting photo-electrodes, a detailed description of the semiconductor/electrolyte interface, in addition to the photo-electrochemical (PEC) cell. Experimental techniques to investigate both materials and PEC device performance are outlined, followed by an overview of the current state-of-the-art in PEC materials and devices, and combinatorial approaches towards the development of new materials. Finally, the economic and business perspectives of PEC devices are discussed, and promising future directions indicated. Photoelectrochemical Hydrogen Production is a one-stop resource for scientists, students and R&D practitioners starting in this field, providing both the theoretical background as well as useful practical information on photoelectrochemical measurement techniques. Experts in the field benefit from the chapters on current state-of-the-art materials/devices and future directions.
Author: Andrew Bruce Bocarsly
Publisher:
ISBN:
Category : Charge transfer devices (Electronics)
Languages : en
Pages : 492
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Author: Johanes Handoko Sukamto
Publisher:
ISBN:
Category :
Languages : en
Pages : 424
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Author: William Scott Hobson
Publisher:
ISBN:
Category : Photoluminescence
Languages : en
Pages : 502
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Author: Victor Marcu
Publisher:
ISBN:
Category :
Languages : en
Pages : 118
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Book Description
