Photoluminescence
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Photoluminescence
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Author : Thomas S. Teets
language : en
Publisher: American Chemical Society
Release Date : 2021-12-21
Photoluminescence written by Thomas S. Teets and has been published by American Chemical Society this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-12-21 with Science categories.
Photoluminescence provides readers with the appropriate background to thoroughly understand chemical literature involving photoluminescence measurements and interpret photoluminescence data from their own research. It includes a primer on experimental methods as well, so that readers with the appropriate instrument-specific training at their institution can begin conducting reliable photoluminescence experiments in their own research. Since it is rare for chemistry undergraduate or graduate programs to include courses entirely devoted to this topic, this e-book bridges that gap to give readers a solid foundation in photoluminescence, which is relevant to many areas of modern research.
Photoluminescence
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Author : Ellis Marsden
language : en
Publisher:
Release Date : 2018
Photoluminescence written by Ellis Marsden and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with Science categories.
In this collection, chalcogenide glasses doped with rare earth elements are proposed as particularly attractive materials for applications in integrated photonics. The opening chapter is dedicated to reviewing the studies on optical properties of (GeS2)100?x (Ga2S3)x (x=20, 25 and 33 mol%) glasses, doped with Er2S3 in a wide range from 1.8 to 2.7 mol%, by absorption and photoluminescence (PL) spectroscopy. The authors focus on features in absorption, emission, and local ordering and their derivatives as a function of excitation wavelength, Er3+ doping level, Ga content and temperature for the (GeS2)80 (Ga2S3)20 host composition. Next, to demonstrate the technological importance of optical devices with unique properties derived from rare-earth activated glasses, the authors reviewed some fundamental aspects of rare-earth doped optical glassy devices where the light is confined in different volumes or shapes, namely fibers, monoliths, film/coatings and microspheres. Rare-earth activated glasses are often used as components in integrated optical circuits. Later, optical characteristics of semiconducting crystals with layered structure due to quantization effects in the architecture governed by the atomic arrangements are discussed. In order to study the microscopic optical processes of these materials, the phenomenological research from photoluminescence studies (PL) was determined to be essential to those established by conventional bulk materials. Layered crystals such as Cs3Bi2I9, BiI3 and PbI2 have been considered for reporting the PL spectra in order to discuss relevant information concerning photo-induced charge carrier separation and also the radiative and non-radiative recombination dependent on deep or shallow trap states. Additionally, the photoluminescence properties of composites based on conjugated polymers and carbon nanoparticles of the type carbon nanotubes, reduced graphene oxide and fullerenes are analyzed. A review is presented on the photoluminescence properties of various macromolecular compounds, for example poly(para-phenylenevinylene), poly(3-hexylthiophene), poly(3,4-ethylenedioxythiophene-co-pyrene), polydiphenylamine and poly(9,9-dioctylfluorenyl-2,7-diyl) as well as effects induced by the carbon nanoparticles mentioned above. The following chapter focusses on fullerenes, carbon nanotubes, graphene, graphene oxide, graphene and carbon quantum dots. Firstly, the general physical and chemical properties of different carbon-based nanomaterials are presented, such as the crystalline structure, morphology and chemical composition. Additionally, the possibilities of application of carbon-based nanomaterials due to its PL properties are analyzed. The concluding chapter focuses on coordination polymers (CPs) / metal-organic frameworks (MOFs) containing metal ions from d and 4f series and a plethora of organic ligands, the resulted compounds showing remarkable photoluminescence properties with different applications in the field light emitting devices (LEDs), biosensors in medical assays, sensors for identifying certain species (molecules, ions) and so on.
Photoluminescence Research Progress
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Author : Harry K. Wright
language : en
Publisher:
Release Date : 2008
Photoluminescence Research Progress written by Harry K. Wright and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Photoluminescence categories.
Photoluminescence (abbreviated as PL) is a process in which a substance absorbs photons (electromagnetic radiation) and then radiates photons back out. Quantum mechanically, this can be described as an excitation to a higher energy state and then a return to a lower energy state accompanied by the emission of a photon. This is one of many forms of luminescence (light emission) and is distinguished by photoexcitation (excitation by photons), hence the prefix photo-. The period between absorption and emission is typically extremely short, in the order of 10 nanoseconds. Under special circumstances, however, this period can be extended into minutes or hours. Ultimately, available chemical energy states and allowed transitions between states (and therefore wavelengths of light preferentially absorbed and emitted) are determined by the rules of quantum mechanics. A basic understanding of the principles involved can be gained by studying the electron configurations and molecular orbitals of simple atoms and molecules. More complicated molecules and advanced subtleties are treated in the field of computational chemistry.
Cathodoluminescence And Photoluminescence
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Author : Lyuji Ozawa
language : en
Publisher: CRC Press
Release Date : 2018-10-03
Cathodoluminescence And Photoluminescence written by Lyuji Ozawa and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-03 with Science categories.
Written by a senior industry expert with nearly 40 years of hands-on experience, Cathodoluminescence and Photoluminescence: Theories and Practical Applications presents a thorough review of advances, challenges, and recommendations for improving photoluminescent (PL) and cathodoluminescent (CL) phosphor display devices in terms of energy efficiency, image quality, color fidelity, operational lifetime, and production cost. This book traces the development of cathode ray tubes (CRTs), PL and CL phosphor screens, and fluorescent lamps (FL) into modern phosphor display devices. The author relates luminescence phenomena and color to chemical composition, excitation mechanisms, energy conversion efficiencies, and bulk properties of phosphor particles. He also addresses image quality issues such as flickering, smearing, whitening, and contrast. Subsequent chapters focus on powder deposition techniques and the production of phosphor powders themselves. The text describes the necessary raw materials, flux materials, and growth conditions for producing ZnS powders. It provides a quantitative analysis on optimal processes and parameters for ensuring higher quality color and screen resolution. Offering a detailed guide for next-generation scientists and engineers in the field, Cathodoluminescence and Photoluminescence describes current technologies and promising developments for producing higher quality, energy-efficient, and long-lasting phosphor CR and flat CL screen displays.
Photoluminescence
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Author : Merle A. Case
language : en
Publisher:
Release Date : 2012
Photoluminescence written by Merle A. Case and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Luminescence spectroscopy categories.
In this book, the authors present topical research in the study of the applications, types and efficacy of photoluminescence. Topics discussed include internal quantum efficiency of photoluminescence in wide-bandgap semiconductors; the structural ferroelectric and photoluminescent properties in perovskites; photoluminescence emission in ZnO single crystals and the photoluminescence properties of anodic alumina.
Optical Characterization Of Semiconductors
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Author : Sidney Perkowitz
language : en
Publisher: Elsevier
Release Date : 2012-12-02
Optical Characterization Of Semiconductors written by Sidney Perkowitz and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-02 with Technology & Engineering categories.
This is the first book to explain, illustrate, and compare the most widely used methods in optics: photoluminescence, infrared spectroscopy, and Raman scattering. Written with non-experts in mind, the book develops the background needed to understand the why and how of each technique, but does not require special knowledge of semiconductors or optics. Each method is illustrated with numerous case studies. Practical information drawn from the authors experience is given to help establish optical facilities, including commercial sources for equipment, and experimental details. For industrial scientists with specific problems in semiconducting materials; for academic scientists who wish to apply their spectroscopic methods to characterization problems; and for students in solid state physics, materials science and engineering, and semiconductor electronics and photonics, this book provides a unique overview, bringing together these valuable techniques in a coherent wayfor the first time. Discusses and compares infrared, Raman, and photoluminescence methods Enables readers to choose the best method for a given problem Illustrates applications to help non-experts and industrial users, with answers to selected common problems Presents fundamentals with examples from the semiconductor literature without excessive abstract discussion Features equipment lists and discussion of techniques to help establish characterization laboratories
Uv Vis And Photoluminescence Spectroscopy For Nanomaterials Characterization
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Author : Challa S.S.R. Kumar
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-02-19
Uv Vis And Photoluminescence Spectroscopy For Nanomaterials Characterization written by Challa S.S.R. Kumar and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-02-19 with Science categories.
Second volume of a 40-volume series on nanoscience and nanotechnology, edited by the renowned scientist Challa S.S.R. Kumar. This handbook gives a comprehensive overview about UV-visible and photoluminescence spectroscopy for the characterization of nanomaterials. Modern applications and state-of-the-art techniques are covered and make this volume essential reading for research scientists in academia and industry in the related fields.
Photoluminescent Materials And Electroluminescent Devices
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Author : Nicola Armaroli
language : en
Publisher: Springer
Release Date : 2017-05-25
Photoluminescent Materials And Electroluminescent Devices written by Nicola Armaroli and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-05-25 with Science categories.
The series Topics in Current Chemistry Collections presents critical reviews from the journal Topics in Current Chemistry organized in topical volumes. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience. Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field.
Photostimulated Luminescence And Its Applications
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Author : Govinda Rajan
language : en
Publisher:
Release Date : 1996
Photostimulated Luminescence And Its Applications written by Govinda Rajan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Fluorescence categories.
Selected Papers On Phosphors Light Emitting Diodes And Scintillators
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Author : Marvin J. Weber
language : en
Publisher: SPIE-International Society for Optical Engineering
Release Date : 1998
Selected Papers On Phosphors Light Emitting Diodes And Scintillators written by Marvin J. Weber and has been published by SPIE-International Society for Optical Engineering this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Science categories.
This volume contains a selection of papers focusing on phosphors, light emitting diodes, and scintillators.