New PDF release: Electricity from Sunlight: An Introduction to Photovoltaics

By Paul A. Lynn

ISBN-10: 0470745606

ISBN-13: 9780470745601

A full of life and authoritative account of today’s photovoltaic (PV) expertise and its sensible applicationsThis ebook covers components including:a short heritage of PV, and the present overseas scene; the medical rules of sunlight cells together with silicon and new thin-film kinds; PV modules and arrays; grid-connected PV, from domestic structures as much as huge strength crops; the large variety of stand-alone PV structures, and; the commercial and environmental features of sun electrical energy. Key equations and numerical examples are totally mentioned, supplying crucial theoretical heritage. The textual content is supported through copious illustrations and greater than 80 inspiring complete color photos from around the globe to illustrate PV’s large variety of useful applications.This e-book is aimed toward a large readership together with execs operating in similar components, and scholars taking introductory classes in PV and renewable strength. Its type and point also will entice power planners and determination makers, participants of environmental corporations, and the expanding variety of humans drawn to producing their very own electrical energy from solar.

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Additional resources for Electricity from Sunlight: An Introduction to Photovoltaics

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It is analogous to a bubble moving in a liquid; as the liquid moves one way the bubble is seen travelling in the opposite direction. We see that the electrical properties of intrinsic silicon depend on the number of mobile electron–hole pairs in the crystal lattice. At low 31 2 Solar cells temperatures, in the dark, it is effectively an insulator. At higher temperatures, or in sunlight, it becomes a conductor. If we attach two contacts and apply an external voltage using a battery, current will flow – due to free electrons moving one way, holes the other.

Such differences tend to produce stop–go support for PV when governments change, causing confusion and clouding investment decisions. Yet in spite of these drawbacks, the clear trend is towards support by governments regardless of their political hue, mainly because of near-universal agreement that global warming must be checked and renewable energy championed. The emphasis on grid-connected systems in the developed world continues today, making them far more important than stand-alone systems in terms of the total volumes of PV required.

Their wafer technology has been around for a long time and is often referred to as ‘first generation’; they are the cells you are most likely to see on houses, factories, and commercial buildings. However, it is important to realise that many other semiconductor materials can be used to make solar cells. Most come under the heading of thin-film – somewhat confusing because a-Si is also commonly given this title – and involve depositing very thin layers of semiconductor on a variety of substrates.

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Electricity from Sunlight: An Introduction to Photovoltaics by Paul A. Lynn

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