This book covers a comprehensive range of topics on the physical mechanisms of LEDs (light emitting diodes), scattering effects, challenges in fabrication and efficient enhancement techniques in organic and inorganic LEDs. It deals with various reliability issues in organic/inorganic LEDs like trapping and scattering effects, packaging failures, efficiency droops, irradiation effects, thermal degradation mechanisms, and thermal degradation processes.Features:Provides insights into the improvement of performance and reliability of LEDsHighlights the optical power improvement mechanisms in LEDsCovers the challenges in fabrication and packaging of LEDsDiscusses pertinent failures and degradation mechanismsIncludes droop minimization techniquesThis book is aimed at researchers and graduate students in LEDs, illumination engineering, optoelectronics, and polymer/organic materials.