Nitride Phosphors and Solid-State Lighting

Nitride Phosphors and Solid-State Lighting provides an in-depth introduction to the crystal chemistry, synthesis, luminescence, and applications of phosphor materials for solid-state lighting, mainly focusing on new nitride phosphors. Drawing on their extensive experimental work, the authors offer a multidisciplinary study of phosphor materials that encompasses materials science, inorganic chemistry, solid-state chemistry, solid-state physics, optical spectroscopy, crystal field theory, and computational materials science. The book begins with an introduction to the principles, semiconductor/phosphor materials, and characterizations of solid-state lighting and white light-emitting diodes (LEDs). It then discusses the optical and luminescence processes occurring in optically active centers of solid materials and presents the photoluminescence properties of traditional phosphors for white LEDs, including garnets, aluminates, silicates, sulfides, oxysulfides, phosphates, and scheelites. The remainder of the text focuses on newly developed nitride phosphors. The authors describe the crystal chemistry of general nitride compounds, the crystal structure and photoluminescence properties of new nitride phosphors, and synthetic methods for preparing nitride phosphors. They detail the structural analysis of nitride phosphors and present experimental and computational results of typical nitride phosphors. The authors also examine key issues, such as excitation and emission spectra, thermal quenching, and quantum efficiency. The final chapter explores applications of nitride phosphors in white LEDs for general lighting and LCD backlight purposes. Covering novel luminescent materials, this book brings you up to date on the evolving field of solid-state lighting. It illustrates the fundamentals, synthesis, properties, and applications of the latest nitride phosphor materials.

Introduction to Solid-State LightingBasics of Solid-State LightingBasics of White Light-Emitting Diodes (LEDs)Applications of Solid-State Lighting Introduction to LuminescenceClassification of Optical ProcessesFundamentals of LuminescenceLuminescent CentersMeasurement of Luminescence Traditional Phosphors in White LEDsRequirements for Phosphors in White LEDsClassification of PhosphorsPhotoluminescent Properties of Traditional Phosphors Nitride Phosphors in White LEDsClassification and Crystal Chemistry of Nitride CompoundsNitride PhosphorsTunable Luminescence of Nitride PhosphorsSynthesis of Nitride Phosphors Structural Analysis of Nitride PhosphorsX-Ray Diffraction and Rietveld RefinementElectron Microscopy ObservationsXANES/EXAFS TechniquesFirst-Principles CalculationsMolecular Orbital (MO) Cluster Calculations Some Key Issues in Understanding Nitride PhosphorsIntroductionAbsorption and Luminescence Transitions at Long WavelengthQuantum Efficiency and Thermal QuenchingEffects of Lattice Imperfections on Luminescence Properties Applications of Nitride Phosphors in White LEDsWhite LEDs for Lighting/General LightingWhite LEDs for LCD Backlights Index References appear at the end of each chapter.

Rong-Jun Xie is a senior researcher at the National Institute for Materials Science in Japan. His research interests include nitride phosphor materials for solid state lighting, optical ceramics, and sintering of ceramics. Yuan Qiang Li is a senior phosphor scientist at Lightscape Materials, Inc. in the United States. He was previously a professor at Nanjing University of Technology in China. Naoto Hirosaki is a group leader at the National Institute for Materials Science in Japan. He has published more than 230 papers in the areas of non-oxide ceramics and nitride phosphor materials. Hajime Yamamoto is a professor emeritus at the Tokyo University of Technology. He is also the president of the Phosphor Research Society of Japan.