Excitations In Molecular Crystals

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Excitations in Organic Solids

Author : Vladimir M. Agranovich
Publisher : OUP Oxford
ISBN 13 : 0191552917
Total Pages : 512 pages
Book Rating : 4.1/5 (915 download)

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Book Synopsis Excitations in Organic Solids by : Vladimir M. Agranovich

Download or read book Excitations in Organic Solids written by Vladimir M. Agranovich and published by OUP Oxford. This book was released on 2009-02-12 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last decade our expertise in nanotechnology has advanced considerably. The possibility of incorporating in the same nanostructure different organic and inorganic materials has opened up a promising field of research, and has greatly increased the interest in the study of properties of excitations in organic materials. In this book not only the fundamentals of Frenkel exciton and polariton theory are described, but also the electronic excitations and electronic energy transfers in quantum wells, quantum wires and quantum dots, at surfaces, at interfaces, in thin films, in multilayers, and in microcavities. Among the new topics in the book are those devoted to the optics of hybrid Frenkel-Wannier-Mott excitons in nanostructures, polaritons in organic microcavities including hybrid organic-inorganic microcavities, new concepts for organic light emitting devices, the mixing of Frenkel and charge-transfer excitons in organic quasi one-dimensional crystals, excitons and polaritons in one and two-dimensional crystals, surface electronic excitations, optical biphonons, and Fermi resonances by polaritons. All new phenomena described in the book are illustrated by available experimental observations. The book will be useful for scientists working in the field of photophysics and photochemistry of organic solids (for example, organic light-emitting devices and solar cells), and for students who are entering this field. It is partly based on a book by the author written in 1968 - "Theory of Excitons" - in Russian. However the new book includes only 5 chapters from this version, all of which have been updated. The 10 new chapters contain discussions of new phenomena, their theory and their experimental observations.

Optical Properties of Excited States in Solids

Author : Baldassare di Bartolo
Publisher : Springer Science & Business Media
ISBN 13 : 146153044X
Total Pages : 749 pages
Book Rating : 4.4/5 (615 download)

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Book Synopsis Optical Properties of Excited States in Solids by : Baldassare di Bartolo

Download or read book Optical Properties of Excited States in Solids written by Baldassare di Bartolo and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 749 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents an account of the course "Optical Properties of Excited States in Solids" held in Erice, Italy, from June 16 to 3D, 1991. This meeting was organized by the International School of Atomic and Molecular Spectroscopy of the "Ettore Majorana" Centre for Scientific Culture. The purpose of this course was to present physical models, mathematical formalisms and experimental techniques relevant to the optical properties of excited states in solids. Some active physical species, such as ions or radicals, could survive indefinitely if they were completely 'isolated in space. Other active species, such as excited molecular and solid-state systems, are inherently unstable, even in isolation, due to the spontaneous mechanisms that may convert their excitation energies into radiation or heat. Physical parameters that may be used to characterize these excited systems are the localization or delocalization, and the coherence or incoherence, of their state excitations. In solids the excited states, whether they are localized (as for impurities in insulators) or delocalized (as they may occur in semiconductors), are relevant in several regards. Their de-excitation is extremely sensitive to the nature of the excitations of the systems, and a study of the de-excitation processes can yield a variety of information. For example, the excited states may represent the initial condition of the onset of such processes as Stokes-shifted emission, hot luminescence, symmetry-dependent Jahn-Teller and scattering processes, tunneling processes, energy transfer to like and unlike centers, superradiance, coherent radiation, and excited state absorption.

Vibrational-Rotational Excitations in Nonlinear Molecular Systems

Author : Alexander A. Ovchinnikov
Publisher : Springer Science & Business Media
ISBN 13 : 1461513170
Total Pages : 361 pages
Book Rating : 4.4/5 (615 download)

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Book Synopsis Vibrational-Rotational Excitations in Nonlinear Molecular Systems by : Alexander A. Ovchinnikov

Download or read book Vibrational-Rotational Excitations in Nonlinear Molecular Systems written by Alexander A. Ovchinnikov and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: "If there would be no God ~ then what a staff-captain am I?" ~ said one of the characters in a novel by Dostoevskii. In a similar way we can exclaim: "If there would be no nonlinearity ~ than what physics would that be'?". Really, the most interesting and exciting effects are described by non linear equations, and vanish in the linear approximation. For example, the general theory of relativity by A.Einstein comes to mind first - one of the most beautiful physical theories, which is in fact essentially nonlinear. Next, the phase transitions crystal ~ liquid and liquid ~ gas are due to the anhar monicity of inter-particle interactions, to dissociation and infinite motion. Similarly, transitions into the superconducting state or the superftuid would be impossible with purely harmonic interaction potentials. Another bril liant achievement in nonlinear physics was the construction of a laser and the subsequent development of nonlinear optics. The latter describes the in teraction of the matter with light of super-high intensity, when multi-quanta intra-molecular transitions become essential. Last, we should note here the very beautiful mathematical theory ~ the theory of catastrophes. Its subject is the study of invariant general properties of multi-dimensional surfaces in the vicinity of bifurcation points with respect to continuous transformations.

Medium-Energy Ion Reflection from Solids

Author : E.S. Mashkova
Publisher : Elsevier
ISBN 13 : 0444601007
Total Pages : 463 pages
Book Rating : 4.4/5 (446 download)

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Book Synopsis Medium-Energy Ion Reflection from Solids by : E.S. Mashkova

Download or read book Medium-Energy Ion Reflection from Solids written by E.S. Mashkova and published by Elsevier. This book was released on 2012-12-02 with total page 463 pages. Available in PDF, EPUB and Kindle. Book excerpt: Medium-Energy Ion Reflection from Solids

Single-Particle Rotations in Molecular Crystals

Author : W. Press
Publisher : Springer
ISBN 13 : 3540387994
Total Pages : 140 pages
Book Rating : 4.5/5 (43 download)

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Book Synopsis Single-Particle Rotations in Molecular Crystals by : W. Press

Download or read book Single-Particle Rotations in Molecular Crystals written by W. Press and published by Springer. This book was released on 2006-04-11 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Excitons, Magnons and Phonons in Molecular Crystals

Author : A. B. Zahlan
Publisher : CUP Archive
ISBN 13 : 9780521073523
Total Pages : 250 pages
Book Rating : 4.0/5 (735 download)

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Book Synopsis Excitons, Magnons and Phonons in Molecular Crystals by : A. B. Zahlan

Download or read book Excitons, Magnons and Phonons in Molecular Crystals written by A. B. Zahlan and published by CUP Archive. This book was released on 1968-11-02 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Primary Photoexcitations In Conjugated Polymers: Molecular Exciton Versus Semiconductor Band Model

Author : Niyasi Serdar Sariciftci
Publisher : World Scientific
ISBN 13 : 9814518212
Total Pages : 641 pages
Book Rating : 4.8/5 (145 download)

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Book Synopsis Primary Photoexcitations In Conjugated Polymers: Molecular Exciton Versus Semiconductor Band Model by : Niyasi Serdar Sariciftci

Download or read book Primary Photoexcitations In Conjugated Polymers: Molecular Exciton Versus Semiconductor Band Model written by Niyasi Serdar Sariciftci and published by World Scientific. This book was released on 1998-01-02 with total page 641 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume concentrates on the controversy within the scientific community over how to explain, understand and describe the photophysics/photochemistry of this class of materials.This controvery is of such a fundamental nature that the solution of the problem might be in a unification of the semiconductor and metal physics with the molecular quantum chemistry. Thus, a wide-ranging and comprehensive discussion of this very crucial issue has not been written down yet.This volume brings together the most prominent scientists specializing in this controversial topic. Each contributor addresses the opponents' arguments. After short introductory chapters, the contributors discuss their own speciality area and compare the results with both models and explain their position on why one of the models is more appropriate. Special emphasis is given to comparative discussions with other conjugated molecular systems as well as inorganic semiconductors.

Organic Molecular Aggregates

Author : P. Reineker
Publisher : Springer Science & Business Media
ISBN 13 : 3642821413
Total Pages : 292 pages
Book Rating : 4.6/5 (428 download)

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Book Synopsis Organic Molecular Aggregates by : P. Reineker

Download or read book Organic Molecular Aggregates written by P. Reineker and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the talks presented at the International Symposium on Electronic Excitations and Interaction Processes in Organic Molecular Aggre gates which was held at Schloss Elmau, Bavaria, Germany from June 5 to June 10, 1983. In the recent years the investigation of organic materials has developed rapidly and has led to the construction of materials with interesting proper ties. The discovery of highly conducting and superconducting organic materials is definitely one of the reasons for the enormous increase in research acti vity in this field. Interesting applications have been realized or seem pos sible, such as the application of organic materials in electrophotography. The conductivity of organic polymers may be varied within a large range by doping and such materials have been used to construct an organic battery. Some time ago it was suggested that organic glasses and polymers could be used as stor age materials in computer technology. With the development of preparation tech niques and modern methods of investigation, for example, high resolution and picosecond spectroscopy, a large amount of experimental data is available not only for the conducting materials but also for organic semiconductors and in sulators. With this rapid accumulation of experimental material the microscopic theoretical understanding could not keep pace.

Collective Excitations in Solids

Author : Baldassare Di Bartolo
Publisher : Springer Science & Business Media
ISBN 13 : 1468488783
Total Pages : 717 pages
Book Rating : 4.4/5 (684 download)

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Book Synopsis Collective Excitations in Solids by : Baldassare Di Bartolo

Download or read book Collective Excitations in Solids written by Baldassare Di Bartolo and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 717 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents an ac count of the NATO Advanced Study Institute on "Collective Excitations in Solids," held in Erice, Italy, from June 15 to June 29, 1981. This meeting was organized by the International School of Atomic and Molecular Spectroscopy of the "Ettore Majorana" Centre for Scientific Culture. The objective of the Institute was to formulate a unified and coherent treatment of various collective excitation processes by drawing on the current advances in various branches of the physics of the solid state. A total of 74 participants came from 54 laboratories and 20 nations (Australia, Belgium, Burma, Canada, China, France, F. R. Germany, Greece, Israel, Italy, Mexico, The Netherlands, Pakistan, Poland, Portugal, Romania, Switzerland, Turkey, The Uni ted Kingdom, and The United States). The secretaries of the course were: Joseph Danko for the scientific aspects and Nino La Francesca for the administrative aspects of the meeting. Fourty-four lectures divided in eleven series were given. Nine "long" seminars and eight "short" seminars were also presented. In addition, two round-table discussions were held.

Exciton Dynamics in Molecular Crystals and Aggregates

Author :
Publisher : Springer
ISBN 13 : 3540390685
Total Pages : 233 pages
Book Rating : 4.5/5 (43 download)

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Book Synopsis Exciton Dynamics in Molecular Crystals and Aggregates by :

Download or read book Exciton Dynamics in Molecular Crystals and Aggregates written by and published by Springer. This book was released on 2006-04-11 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Organic Molecular Solids

Author : Markus Schwoerer
Publisher : John Wiley & Sons
ISBN 13 : 352761866X
Total Pages : 438 pages
Book Rating : 4.5/5 (276 download)

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Book Synopsis Organic Molecular Solids by : Markus Schwoerer

Download or read book Organic Molecular Solids written by Markus Schwoerer and published by John Wiley & Sons. This book was released on 2008-09-26 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first comprehensive textbook on the physical aspects of organic solids. All phenomena which are necessary in order to understand modern technical applications are being dealt with in a way which makes the concepts of the topics accessible for students. The chapters - from the basics, production and characterization of organic solids and layers to organic semiconductors, superconductors and opto-electronical applications - have been arranged in a logical and well thought-out order.

Electronic Excitations in Organic Based Nanostructures

Author :
Publisher : Elsevier
ISBN 13 : 0080519210
Total Pages : 509 pages
Book Rating : 4.0/5 (85 download)

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Book Synopsis Electronic Excitations in Organic Based Nanostructures by :

Download or read book Electronic Excitations in Organic Based Nanostructures written by and published by Elsevier. This book was released on 2003-11-13 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first book devoted to a systematic consideration of electronic excitations and electronic energy transfer in organic crystalline multilayers and organics based nanostructures(quantum wells, quantum wires, quantum dots, microcavities). The ingenious combination of organic with inorganic materials in one and the same hybrid structure is shown to give qualitatively new opto-electronic phenomena, potentially important for applications in nonlinear optics, light emitting devices, photovoltaic cells, lasers and so on. The book will be useful not only for physicists but also for chemists and biologists.To help the nonspecialist reader, three Chapters which contain a tutorial and updated introduction to the physics of electronic excitations in organic and inorganic solids have been included.* hybrid Frenkel-Wannier-Mott excitons* microcavities with crystalline and disordered organics * electronic excitation at donor-acceptor interfaces * cold photoconductivity at donor-acceptor interface* cummulative photovoltage* Feorster transfer energy in microcavity* New concepts for LEDs

Spectroscopy and Dynamics of Collective Excitations in Solids

Author : Baldassare di Bartolo
Publisher : Springer Science & Business Media
ISBN 13 : 1461558352
Total Pages : 678 pages
Book Rating : 4.4/5 (615 download)

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Book Synopsis Spectroscopy and Dynamics of Collective Excitations in Solids by : Baldassare di Bartolo

Download or read book Spectroscopy and Dynamics of Collective Excitations in Solids written by Baldassare di Bartolo and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the proceedings of the course "Spectroscopy and Dynamics of Collective Excitations in Solids" held in Erice, Italy from June 17 to July 1, 1995. This meeting was organized by the International School of Atomic and Molecular Spectroscopy of the "Ettore Majorana" Centre for Scientific Culture. The purpose of this course was to present and discuss physical models, mathematical formalisms, experimental techniques and applications relevant to the subject of collective excitations in solids. By bringing together specialists in the field of solid state spectroscopy, this course provided a much needed forum for the critical assessment and evaluation of recent and past developments in the physics of solids. A total of 83 participants came from 57 laboratories and 20 different countries (Austria, Belgium, Brazil, Denmark, Finland, France, Germany, Greece, Israel, Italy, Japan, The Netherlands, Norway, Portugal, Russia, Spain, Switzerland, Turkey, the United Kingdom, and the United States). The secretaries of the course were Stamatios K yrkos and Daniel Di Bartolo. 45 lectures divided in 13 series were given. In addition 8 (one or two-hour) "long seminars," 1 "special lecture," 2 interdisciplinary lectures, 29 "short seminars," and 16 posters were presented. The sequence of lectures was in accordance with the logical development of the subject of the meeting. Each lecturer started at a rather fundamental level and ultimately reached the frontier of knowledge in the field.

Localization and Delocalization in Quantum Chemistry

Author : Odilon Chalvet
Publisher : Springer Science & Business Media
ISBN 13 : 9401014566
Total Pages : 470 pages
Book Rating : 4.4/5 (1 download)

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Book Synopsis Localization and Delocalization in Quantum Chemistry by : Odilon Chalvet

Download or read book Localization and Delocalization in Quantum Chemistry written by Odilon Chalvet and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second volume of the proceedings of the international seminar devoted to locali· zation and delocalization in quantum chemistry is divided into four parts. The first one is mainly concerned with the localizability of electrons in ionized and exited states. The second part shows how is it possible to take advantage of the localizability of electrons to compute molecular wave-functions. The third part of the book is an homogeneous analysis of the electronic collective excitation and of the motion of excitons in organic solids. The last section is devoted to the study of the role of electron localizability in the chemical reactivity of molecules. Concluding remarks are concerned with a careful analysis of the localizability concept itself in relation with a possible interpretation of the wave-mechanics. PART I ELECTRON LOCALIZATION IN IONIZED AND EXCITED STATES APPLICATIONS OF PAIR DENSITY ANALYSIS R. CONSTANCIEL and L. ESNAULT Centre de Mecanique Ondulatoire Appliquee, Paris, France Abstract. The method of pair density analysis is applied to various kinds of calculations. We examine the influence of the quality of the wavefunction and of the nuclear configuration; the problem of hybridization is discussed, as weIl as the relations between separability and excitation.

Relaxation Processes in Molecular Excited States

Author : J. Fünfschilling
Publisher : Springer Science & Business Media
ISBN 13 : 9400908636
Total Pages : 282 pages
Book Rating : 4.4/5 (9 download)

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Book Synopsis Relaxation Processes in Molecular Excited States by : J. Fünfschilling

Download or read book Relaxation Processes in Molecular Excited States written by J. Fünfschilling and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Relaxation phenomena of excited molecular states are abundant in all nature. They mediate such key processes as photochemical reactions or even the pathways of ordinary chemical reactions. However, for a long time the main research in electronic relaxation processes was concerned with anorganic solids, in part because of their great technological importance (photography, semiconductors ... ) in part also because these compounds were the "workhorses" of the solid state physicists. In the last 30 years, there was a steadily increasing interest in organic molecular systems, first in molecular crystals and later in all forms of molecular solids (glasses, polymers, membranes, ... ). The present volume combines papers on quite different types of relaxation phenomena: the type of solid studied, the electronic states involved, the physical processes responsible for the relaxations are all different. Nevertheless, after reading this book, a more clear and complete picture of the phenomenon "relaxa tion" emerges that proves that this volume is more than just a collection of individual articles. The volume starts with the paper "Spin-lattice and spin-spin relaxation in photo-excited triplet states in molecular crystals" by Jan Schmidt. Even in these seemingly simple systems of isolated guest molecules in a single crystal host, the relaxation phenomena are quite involved and a very thorough investigation is necessary to find the key relaxation processes. The end of the article provides a bridge to the following paper: it treats interactions of two molecules (dimers), where resonant interactions become important and lead to new, characteristic relaxation processes.

Molecular Excitation Dynamics and Relaxation

Author : Leonas Valkunas
Publisher : John Wiley & Sons
ISBN 13 : 3527653678
Total Pages : 414 pages
Book Rating : 4.5/5 (276 download)

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Book Synopsis Molecular Excitation Dynamics and Relaxation by : Leonas Valkunas

Download or read book Molecular Excitation Dynamics and Relaxation written by Leonas Valkunas and published by John Wiley & Sons. This book was released on 2013-10-04 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work brings together quantum theory and spectroscopy to convey excitation processes to advanced students and specialists wishing to conduct research and understand the entire fi eld rather than just single aspects. Written by experienced authors and recognized authorities in the field, this text covers numerous applications and offers examples taken from different disciplines. As a result, spectroscopists, molecular physicists, physical chemists, and biophysicists will all fi nd this a must-have for their research. Also suitable as supplementary reading in graduate level courses.

Organic Molecular Crystals

Author : Edgar A. Silinsh
Publisher : Springer Science & Business Media
ISBN 13 : 3642814646
Total Pages : 404 pages
Book Rating : 4.6/5 (428 download)

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Book Synopsis Organic Molecular Crystals by : Edgar A. Silinsh

Download or read book Organic Molecular Crystals written by Edgar A. Silinsh and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is based on the results of many years of experimental work by the author and his colleagues, dealing with the electronic properties of organic crystals. E. Silinsh has played a leading role in pOinting out the importance of the polarization energy by an excess carrier, in determining not only the character of the carrier mobility in organic crystals, but in determining the band gap and the nature of the all-important trapping site in these crystals. The one-electron model of electronic conductivity that has been so successful in dealing with inorganic semiconductors is singular ly unsuccessful in rationalizing the unusual physical properties of organic crystals. A many-body theory is required, and the experimental manifestation of this is the central role played by the crystal polarization enerqies in transferring the results obtained with the isolated molecule, to the solid. The careful studies of E. Silinsh in this field have shown tn detail how this polarization energy develops around the excess carrier (and also the hole-electron pair) sitting on a molecular site in the crystal. As with all insulators, trapping sites playa dominant role in reducing the magnitude of ~he current that can theoretically pass through the organic crystal. It is usually the case that these trapping sites are energetically distributed within the forbidden band of the crystal. For many years, an exponential distribution has shown itself to be useful and reasonably correct: However,' E.