This is a 'must read' for anyone interested in understanding everything about thin film silicon solar cells. Given that I have been working in this field for the last 3 years, I am aware of the author's background. The author is a complete authority on the subject and has worked on this topic extensively for about 25 years+. He was also conferred the becquerel prize (the highest award conferred to anyone in the field of PV - aka, the nobel of PV), which is another indication of his mastery on this topic. He has brought together the best people in the field to write individual chapters - but the key lies in the excellent editing by the author - his ability to explain in the most simplest ways, what is, a very complex subject. For example, I have read several books on device physics on solar cells, but I haven't found any book which explain concepts so beautifully as this one. I highly recommend chapter 4 (theory of solar cell devices) to anyone wanting to understand how solar cells actually work from a device physics point of view. Another great aspect of this book is that the author is forthcoming in addressing practical industrial challenges to the application of thin film silicon solar cells and discusses areas of possible improvement. All, in all this book is a great combination of understanding theory of thin film silicon solar cells and practical challenges to make an actual product using this technology. 5 stars for this one!