Sunday 30 August 2009

Laser - led


Schubert (RPI) has written an excellent book on LEDs that manages to explain and derive simple quantitative models for many phenomena of current interest. He tackles issues such as resonant cavity LEDs, reliability/surface recombination issues, current spreading theory, etc. Many monographs are a compendium of results in the field with hundreds of references to papers, which are briefly discussed, and are written by several authors. In contrast, Schubert, while giving copious references, is the sole author, leading to a coherent presentation well suited to learning. There are plentiful and good figures and drawings, as well as many exercises and solutions integrated into the text. There are no back of chapter problems, but this is not really a text for lower level undergraduates. Light-Emitting Diodes

This book is for master , PHD or higher. Lots of graduate school physics, math. Researcher, scientest engineering grad. school student may find it useful for studying light emmiting semiconductor material. I was a electrical engineer myself. I am tring to find practical applications of LED and LED products design technics find this book not very useful.

It is a great book for pople interested in the LED device. It is disappointing in people interested in the processing to make the device. I hope Prof. Schubert will add that dimension in his next book on this topic.

I just bought one of these through Amazon and it turned out to be the 1st (2003) edition instead of the 2nd (2006). The Amazon ordering system doesn't seem to distinguish between them so make sure you get the right one. There are substantial differences!

In its Second Edition - this book is much improved and far more up-to-date, with plenty of practical advice as well theory/design. But still no discussion of band-structure in any detail - which I feel is a weakness of this text. Some valuable material on Nitrides is now included. Overall - this is now arguably the best LED book in the market-place at this time.

This book provides the details on LED physics that I sought. It describes how key parts of the LED structure contribute to overall performance, and how LED's have been improved over the years. It is well written. I do not intend to use most of the equations included in this book, still I found it relatively easy to understand. I am already familiar with many of the silicon based technologies having worked on manufacturing processes and tools for IC's, TFT's, and solar cells (PV). This book was recommended to me by a technologist working on LED's. I recommend this book to the serious technologist who's trying to understand how to improve LED's and their use.

I think, the book contains all the basic information about the LEDs. It contains very helpful information regarding to the structure of LEDs, their design, the optimization of the LED performance, colorimetry, etc.

I think the only negative point related to this book is that sometimes the variables/parameters in the equations are not given clearly. Therefore reader should look at the previous pages to understand these parameters/variables. - Led'


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