Energy transfer process, luminescence optimizing and various applications of lanthanide complexes
Energy transfer process, luminescence optimizing and various applications of lanthanide complexes

Author: Wei Fan

Publisher: OAE Publishing Inc.

Published: 2024-01-29

Total Pages: 21

ISBN-13:

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Modulating the spectroscopic overlap between the emission bands of donors and the absorption spectra of acceptors by various simulations, it is possible to systematically investigate the emission behaviors of lanthanide complexes under different conditions. To establish the relationships between emission behaviors and various external simulations, it is necessary to study the energy transfer rate and efficiency between the donor and acceptor under different conditions to clarify the luminescent mechanism of the complexes, providing a theoretical basis for high-performance smart materials. This review focuses on the recent progress of luminescence performance of lanthanide complexes, including energy transfer mechanisms, emission color modulation, the strategies for optimizing lanthanide luminescence, and finally, various applications based on luminescence performance of lanthanide complexes and lanthanide metal-organic frameworks.

Lanthanide Luminescence
Lanthanide Luminescence

Author: Pekka Hänninen

Publisher: Springer Science & Business Media

Published: 2011-06-21

Total Pages: 392

ISBN-13: 3642210236

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Lanthanides have fascinated scientists for more than two centuries now, and since efficient separation techniques were established roughly 50 years ago, they have increasingly found their way into industrial exploitation and our everyday lives. Numerous applications are based on their unique luminescent properties, which are highlighted in this volume. It presents established knowledge about the photophysical basics, relevant lanthanide probes or materials, and describes instrumentation-related aspects including chemical and physical sensors. The uses of lanthanides in bioanalysis and medicine are outlined, such as assays for in vitro diagnostics and research. All chapters were compiled by renowned scientists with a broad audience in mind, providing both beginners in the field and advanced researchers with comprehensive information on on the given subject.

Luminescence of Lanthanide Ions in Coordination Compounds and Nanomaterials
Luminescence of Lanthanide Ions in Coordination Compounds and Nanomaterials

Author: Ana de Bettencourt-Dias

Publisher: John Wiley & Sons

Published: 2014-09-08

Total Pages: 408

ISBN-13: 1118682815

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This comprehensive book presents the theoretical principles, current applications and latest research developments in the field of luminescent lanthanide complexes; a rapidly developing area of research which is attracting increasing interest amongst the scientific community. Luminescence of Lanthanide Ions in Coordination Compounds and Nanomaterials begins with an introduction to the basic theoretical and practical aspects of lanthanide ion luminescence, and the spectroscopic techniques used to evaluate the efficiency of luminescence. Subsequent chapters introduce a variety of different applications including: • Circularly polarized luminescence • Luminescence bioimaging with lanthanide complexes • Two-photon absorption of lanthanide complexes • Chemosensors • Upconversion luminescence • Excitation spectroscopy • Heterometallic complexes containing lanthanides Each chapter presents a detailed introduction to the application, followed by a description of experimental techniques specific to the area and an extensive review of recent literature. This book is a valuable introduction to the literature for scientists new to the field, as well as providing the more experienced researcher with a comprehensive resource covering the most relevant information in the field; a ‘one stop shop’ for all key references.

Lasers and Excited States of Rare Earths
Lasers and Excited States of Rare Earths

Author: Renata Reisfeld

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 235

ISBN-13: 3642666965

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The possibility of stimulated light emission was discussed by Einstein in 1917, eight years before the quantum-mechanical description of energy levels of many-electron systems. Though it is imperative to use samples having optical properties greatly different from the stan dard continuous spectrum of opaque objects ("black body" radia tion) it is not always necessary to restrict the study to monatomic entities. Thus, spectral lines can be obtained (in absorption and in emission) from lanthanide compounds, containing from one to thir teen 4f electrons going from trivalent cerium to ytterbium, that are nearly as sharp as the ones from gaseous atoms. However, the presence of adjacent atoms modifies the simple picture of an isolated electron configuration, and in particular, it is possible to pump excited levels efficiently by energy transfer from species with intense absorption bands, such as the inter-shell transitions of other lanthanides and of thallium(I), lead(II) and bismuth(III) or the electron transfer bands of the uranyl ion or other complexes. On the other hand, it is possible to diminuish the mUlti-phonon relaxation (competing with sharp line luminescence) by selecting vitreous or crystalline materials with low phonon energies. Obviously, one cannot circumvent the conservation of energy by lasers, but they may have unprecedented consequences for the future by allowing nuclear fusion of light elements, effects of non-linear optics and time-resolved spectroscopy, besides the more conventional applications of coherent light beams with negligible angular extension.

Advanced Micro- and Nanomaterials for Photovoltaics
Advanced Micro- and Nanomaterials for Photovoltaics

Author:

Publisher: Elsevier

Published: 2019-05-25

Total Pages: 342

ISBN-13: 0128145021

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Nanomaterials are becoming increasingly important photovoltaic technologies from absorbers to contacts. This book is dedicated to describing the novel materials and technologies for photovoltaics that derive from these new and novel approaches in solar technologies. We have collected a set of renowned experts in their respective fields as authors and their expertise covers a broad set of areas including novel oxides, quantum dots, CZTS and organic solar cells, as well as light management and reliability testing. The organization of the book is divided into three sections; the first part deals with emerging photovoltaic absorbers and absorber approaches, the second part is focused on novel solar cell architectures and device concepts and components; and the last part is focused on their integration into module technologies. The first chapter is an introduction to the basics of solar cells technology facilitating an understanding by the non-expert of the following chapters. The book is intended for academics and professionals, at the research and R&D level in materials and devices, who are looking for opportunities for applications in the solar materials, devices and modules areas. Hopefully it will serve as a reference for students and professionals looking into the potential and development of novel photovoltaic technologies, researchers looking into the development of innovative projects, and teachers in the field of energy and sustainability. - Showcases a range of cutting-edge photovoltaic materials and devices, exploring their special properties and how they are best used - Assesses the challenges of fabricating solar cell devices using nanotechnology - Explores how producing cheaper modules, increasing reliability and increasing efficiency have led to new applications for photovoltaic devices

Luminescence Thermometry
Luminescence Thermometry

Author: Miroslav Dramićanin

Publisher: Woodhead Publishing

Published: 2018-04-21

Total Pages: 304

ISBN-13: 0081020309

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Luminescence Thermometry: Methods, Materials, and Applications presents the state-of-the art applications of luminescence thermometry, giving a detailed explanation of luminescence spectroscopic schemes for the read-out of temperature, while also describing the diverse materials that are capable of sensing temperature via luminescence. Chapters cover the fundamentals of temperature, traditional thermometers and their figures of merit, a concise description of optical thermometry methods, luminescence and instrumentation, and an explanation of the ways in which increases in temperature quench luminescence. Additional sections focus on materials utilized for luminescence thermometry and the broad range of applications for luminescence thermometry, including temperature measurement at the nanoscale and the application of multifunctional luminescent materials. - Provides an overview of luminescence thermometry applications, including high-temperature, biomedical, nanoscale and multifunctional - Delves into luminescence thermometry by materials group, including Rare-earth and transition Metal Ion Doped, Semiconductors, Quantum Dots and Organic materials - Gives a concise introduction of the latest methods of temperature measurement, including luminescence spectroscopic schemes and methods of analysis

Energy Transfer Processes in Polynuclear Lanthanide Complexes
Energy Transfer Processes in Polynuclear Lanthanide Complexes

Author: Shun Omagari

Publisher: Springer

Published: 2019-01-17

Total Pages: 153

ISBN-13: 9811360499

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This book describes the luminescence mechanism of polynuclear lanthanide complexes, focusing on energy transfer processes using a combination of experimental and theoretical approaches. Lanthanide complexes show intense luminescence from the lanthanide ion through sensitization by the organic ligands. The high chromaticity of the emission and the long lifetimes of the complexes are particularly attractive for applications such as organic light-emitting diodes and bioprobes. Polynuclear lanthanide complexes (coordination polymers and clusters) have attracted considerable interest for functionalization by energy transfer between lanthanide ions. At the same time, such extra processes complicate the luminescence mechanism, hindering the rational design of functional polynuclear lanthanide complexes. Firstly, the book explains the principle of the theoretical methods, and then describes the concentration-quenching mechanism in coordination polymers. It also examines the effect of intrinsic spin–orbit coupling arising from lanthanide ions on the ligand-to-lanthanide energy transfer efficiency and the mechanism of back energy transfer (the opposite of sensitizing energy transfer) in lanthanide clusters. This sets the stage for the final topic: the suppression of back energy transfer by energy transfer between lanthanide ions in lanthanide clusters, which is of critical importance, showing that the lanthanide clusters can be considered a new generation of functional and efficient luminescent material and could also provide a breakthrough in lanthanide photophysics.