Cover of Understanding Luminescence Spectra and Efficiency Using Wp and Related Functions
Read Time: ~4.3 hr

Understanding Luminescence Spectra and Efficiency Using Wp and Related Functions

by Charles W. Struck, William H. Fonger (1991)

About this book

This book gives a semiquantitative understanding of the properties observed in luminescence, i.e., where energy absorption and emission occur, and with what efficiency these conversion processes take place. The authors give a correct treatment of the offset dependence and the temperature dependence of nonradiative rates. The Wp function is defined as the sum of thermally weighted Franck-Condon factors. It is obtained in one dimension in several forms, and a useful recursion relation is derived between Wp's with nearby p indices. Two classes of applications are considered. First, an exposition of the broad classes of luminescence behavior is given and the Wp function and related functions are applied to each. Then the detailed application of these functions to specific experimental data, namely, to Eu3+, Tm3+, and Yb3+ in oxysulfides and oxychlorides and to Cr3+ in ruby is extensively discussed. The authors give a thorough review of the related literature. The many exact and approximate forms, some with certain errors, for Wp and related functions are listed and their relationship to Wp are given.

Setting / LocationGlobal
Story EraModern Era
Protagonist / CoreUnderstanding Luminescence Spectra and Efficiency Using Wp and Related Functions Lead Character

Readers who enjoyed this also loved

Cover of Graphite Intercalation Compounds I

Graphite Intercalation Compounds I

Hartmut Zabel, Stuart Solin

This book covers the basic physics and chemistry of graphite intercalation compounds. Emphasis is laid on the layered or quasi-two-dimensional structure of these compounds, which provides an exciting arena for testing physical concepts in lower dimensions. The chapters in this volume, all of which have been written by internationally recognized experts in the field, cover the following topics: the structure and phase transitions of intercalate atoms and molecules in graphite, the physics of staging formation and staging transitions, the lattice dynamics of these compounds as determined by inelastic neutron scattering and optical methods, the diffusivity of the guest species, mesoscopic properties such as domain structures and stacking arrangements, and the synthesis of new compounds. The reviews provide a comprehensive overview of the current status of the field of two- dimensional physics.

Cover of Cooperative Phenomena in Jahn--Teller Crystals

Cooperative Phenomena in Jahn--Teller Crystals

Michael D. Kaplan, Benjamin G. Vekhter

This volume is the <em>first</em> detailed and comprehensive account of the cooperative Jahn-Teller effect-focusing on the qualitative side of the phenomena. In addition to covering all aspects of this phenomena, this well-illustrated volume features a discussion on the recent breakthroughs on how the properties of high-temperature superconductors may influence the cooperative Jahn-Teller effect. Researchers and students working in chemistry will find this volume to be an invaluable addition to their reference collection.

Cover of Physical Chemistry of Magmas

Physical Chemistry of Magmas

Leonid L. Perchuk, Ikuo Kushiro

Physical Chemistry of Magmas investigates the properties, structure, and phase relationships of silicate melts with invited contributions from an international team of experts. Data and some rules for estimating the properties and structures of melts, as well as the implications of the physical chemistry of silicate liquids to igneous petrology are presented. The second section then focuses on phase relationships, with particular attention on the application of experimental and theoretical petrology to modeling the origin of certain magmas.

Cover of Nonequilibrium Nondissipative Thermodynamics

Nonequilibrium Nondissipative Thermodynamics

Ji-Tao Wang

This book provides a framework for analysing complex systems for which classical thermodynamics is often not applicable. Since the success of the activated process in 1970, diamond growth with simultaneous graphite etching under low pressure has often been regarded as a violation of the second law of thermodynamics. A series of nonequilibrium phase diagrams, which agree excellently with the activated diamond experi- ments, have been calculated by the author and his coworkers on the basis of reaction coupling. The book goes on to de- monstrate how these lead to a complete new systematization of modern thermodynamics.

Understanding Luminescence Spectra and Efficiency Using Wp and Related Functions by Charles W. Struck, William H. Fonger | Literally Just Books