Preface

This book provides a comprehensive and current overview of light-emitting diodes (LEDs). It discusses recent advances in micro, nano, and high-power LEDs and reviews the various degradation analyses of LEDs and gallium nitride (GaN)-based LEDs. The latter were discovered by Shuji Nakamura, who won the 2014 Nobel Prize in Physics along with Isamu Akasaki and Hiroshi Amano. After the invention of GaN-based blue LEDs, there was a revolutionary development in the III-nitride-based semiconductor industry worldwide.

This book is divided into three sections. The first section presents an introduction to micro-LEDs based on quantum dots and developments in nano LEDs. This section includes the chapters "Full-Color Micro-LED Devices Based on Quantum Dots" and "Milestone Developments and New Perspectives of Nano/Nanocrystal Light Emitting Diodes".

The second section discusses high-power LEDs. It includes the chapters "High-Temperature Operating Narrow-Period Terahertz Quantum Cascade Laser Designs" and "Degradation Analysis of Silicone as Encapsulation and Molding Material in High Power LEDs".

The third section includes one chapter on "Recent Advancements in GaN LED Technology".

We thank all the authors for their contributions and patience in editing the book.

We also thank Author Service Manager Ana Cink and IntechOpen for allowing us to edit this fascinating book project.

> **Chandra Shakher Pathak** Ben-Gurion University of the Negev, Beersheba, Israel

**Uday Dadwal** Indian Institute of Technology Delhi, New Delhi, India

**1**

Section 1

Micro and Nano LEDs

Section 1
