Infrared Study of Charge Transfer Between Organic Molecules and Semiconductors PDF Download
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Author: He Hu
Publisher:
ISBN:
Category : Organic photochemistry
Languages : en
Pages : 79
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Book Description
Photocatalytic reactions are characterized by the transfer of the photo-generated charge carriers between semiconductors and organic molecules. A fundamental study of the charge transfer process between organic molecules and semiconductors are required to improve the efficiency of the photocatalytic processes. Fourier transform infrared spectroscopy is proven to be a useful technique for studying the charge transfer. The photo-generated charge carriers consist of hole and electron, the latter can give a structure of infrared band, which probably behave as delocalized electrons, give a structureless increase in the background of the IR spectrum. In this work, the following results will discussed: (i) in situ infrared study of anatase TiO2 absorbed with various kinds of organic molecules (ethanol, PEG 200, PEG 20000, PVA, ethylene glycol, glycerol); (ii) in situ infrared study of semiconductor materials with adsorbed ethanol. In situ infrared study of N719 dye sensitized solar cell and photocatalytic activity of polyaniline will also be discussed in the presentation. The results of this study will help improve the understanding of the mechanism of photocatalytic reactions.
Author: He Hu
Publisher:
ISBN:
Category : Organic photochemistry
Languages : en
Pages : 79
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Book Description
Photocatalytic reactions are characterized by the transfer of the photo-generated charge carriers between semiconductors and organic molecules. A fundamental study of the charge transfer process between organic molecules and semiconductors are required to improve the efficiency of the photocatalytic processes. Fourier transform infrared spectroscopy is proven to be a useful technique for studying the charge transfer. The photo-generated charge carriers consist of hole and electron, the latter can give a structure of infrared band, which probably behave as delocalized electrons, give a structureless increase in the background of the IR spectrum. In this work, the following results will discussed: (i) in situ infrared study of anatase TiO2 absorbed with various kinds of organic molecules (ethanol, PEG 200, PEG 20000, PVA, ethylene glycol, glycerol); (ii) in situ infrared study of semiconductor materials with adsorbed ethanol. In situ infrared study of N719 dye sensitized solar cell and photocatalytic activity of polyaniline will also be discussed in the presentation. The results of this study will help improve the understanding of the mechanism of photocatalytic reactions.
Author: Marie Helene Delville
Publisher: John Wiley & Sons
ISBN: 3527342559
Category : Technology & Engineering
Languages : en
Pages : 1010
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Book Description
Das erste Handbuch und gut zugängliche Referenzwerk zu diesem zunehmend wichtigen Thema erläutert in einem anwendungsorientierten Ansatz Synthese, Design, Charakterisierung und Simulation von Grenzflächen bei hybriden organisch-anorganischen Materialien.
Author: Sidney Yip
Publisher: Springer Science & Business Media
ISBN: 1402032862
Category : Science
Languages : en
Pages : 2903
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Book Description
The first reference of its kind in the rapidly emerging field of computational approachs to materials research, this is a compendium of perspective-providing and topical articles written to inform students and non-specialists of the current status and capabilities of modelling and simulation. From the standpoint of methodology, the development follows a multiscale approach with emphasis on electronic-structure, atomistic, and mesoscale methods, as well as mathematical analysis and rate processes. Basic models are treated across traditional disciplines, not only in the discussion of methods but also in chapters on crystal defects, microstructure, fluids, polymers and soft matter. Written by authors who are actively participating in the current development, this collection of 150 articles has the breadth and depth to be a major contributor toward defining the field of computational materials. In addition, there are 40 commentaries by highly respected researchers, presenting various views that should interest the future generations of the community. Subject Editors: Martin Bazant, MIT; Bruce Boghosian, Tufts University; Richard Catlow, Royal Institution; Long-Qing Chen, Pennsylvania State University; William Curtin, Brown University; Tomas Diaz de la Rubia, Lawrence Livermore National Laboratory; Nicolas Hadjiconstantinou, MIT; Mark F. Horstemeyer, Mississippi State University; Efthimios Kaxiras, Harvard University; L. Mahadevan, Harvard University; Dimitrios Maroudas, University of Massachusetts; Nicola Marzari, MIT; Horia Metiu, University of California Santa Barbara; Gregory C. Rutledge, MIT; David J. Srolovitz, Princeton University; Bernhardt L. Trout, MIT; Dieter Wolf, Argonne National Laboratory.
Author: R. F. Lake
Publisher:
ISBN:
Category : Electron donor-acceptor complexes
Languages : en
Pages : 338
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Book Description
Author: Jean-Pierre Farges
Publisher: CRC Press
ISBN: 1000723585
Category : Technology & Engineering
Languages : en
Pages : 874
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Book Description
This work examines all aspects of organic conductors, detailing recent theoretical concepts and current laboratory methods of synthesis, measurement, control and analysis. It describes advances in molecular-scale engineering, including switching and memory systems, Schottky and electroluminescent diodes, field-effect transistors, and photovoltaic devices and solar cells.
Author: Michael D. Fayer
Publisher: CRC Press
ISBN: 1466510137
Category : Science
Languages : en
Pages : 491
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Book Description
The advent of laser-based sources of ultrafast infrared pulses has extended the study of very fast molecular dynamics to the observation of processes manifested through their effects on the vibrations of molecules. In addition, non-linear infrared spectroscopic techniques make it possible to examine intra- and intermolecular interactions and how such interactions evolve on very fast time scales, but also in some instances on very slow time scales. Ultrafast Infrared Vibrational Spectroscopy is an advanced overview of the field of ultrafast infrared vibrational spectroscopy based on the scientific research of the leading figures in the field. The book discusses experimental and theoretical topics reflecting the latest accomplishments and understanding of ultrafast infrared vibrational spectroscopy. Each chapter provides background, details of methods, and explication of a topic of current research interest. Experimental and theoretical studies cover topics as diverse as the dynamics of water and the dynamics and structure of biological molecules. Methods covered include vibrational echo chemical exchange spectroscopy, IR-Raman spectroscopy, time resolved sum frequency generation, and 2D IR spectroscopy. Edited by a recognized leader in the field and with contributions from top researchers, including experimentalists and theoreticians, this book presents the latest research methods and results. It will serve as an excellent resource for those new to the field, experts in the field, and individuals who want to gain an understanding of particular methods and research topics.
Author: Brent E. Sells
Publisher:
ISBN:
Category : Charge transfer
Languages : en
Pages : 52
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Book Description
Author: L. Pal
Publisher:
ISBN: 9783662161425
Category :
Languages : en
Pages : 664
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Book Description
Author:
Publisher:
ISBN:
Category : Military research
Languages : en
Pages : 272
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Book Description
Author: D. Jerome
Publisher: Springer Science & Business Media
ISBN: 1489936114
Category : Technology & Engineering
Languages : en
Pages : 524
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Book Description
Research activities in low dimensional conductors have shown a rapid growth since 1972 and have led to the discovery of new and remarkable phy sical properties unique to both molecular and inorganic conductors exhibi ting one-dimensional transport behaviour. This NATO Institute was a conti nuation of aseries of NATO Advanced Study Institutes of Worshops which took place at regular intervals till 1979. This is the first time, however, that charge density wave transport and electronic properties of low dimen sional organic conductors are treated on an equal footing. The program of the Institute was framed by tutorial lectures in the theories and experiments of low dimensional conductors. The bulk of the course covered two series of low-dimensional mate rials with their respective properties. 1) The I-D inorganic conductors exhibiting the phenomena of sliding charge density waves, narrow band noise, memory effects, etc ..• 2) Low-dimensional crystallized organic conductors giving rise to various possibilities of ground states, spin-Peierls, spin density wave, Peierls, superconductivity and magnetic-field induced spin density wave, etc ... Since it has been established from the beginning that this Institute was to be devoted essentially to the Physics of Low Dimensional Conductors, only one main course summarized the progress in chemistry and material preparation.
