Home Light • Download Next generation photovoltaics: high efficiency through full by A. Martí, A. Luque PDF

Download Next generation photovoltaics: high efficiency through full by A. Martí, A. Luque PDF

By A. Martí, A. Luque

Photovoltaics are seemed through many because the probably candidate for long-term sustainable strength creation, but their implementation has been constrained via the excessive bills concerned. however, the theoretical restrict on photovoltaic strength conversion potency, above 85%, means that there's room for significant development of current commercially on hand sun cells, either silicon and thin-film established. present learn efforts are concerned with imposing novel suggestions to supply a brand new new release of inexpensive, high-performance photovoltaics that make better use of the sun spectrum.

This publication positive aspects contributions from pioneers of subsequent new release photovoltaic study and provides a finished account of the present cutting-edge in all elements of the sector. issues coated contain multi-junction sunlight cells (the approach closest to commercialisation), quantum dot sun cells, sizzling provider sun cells, a number of quantum good sunlight cells and thermophotovoltaics. the ultimate chapters of the ebook give some thought to the fabrics, fabrication equipment and concentrator optics used for complicated photovoltaic cells.

Next iteration Photovoltaics can be a vital reference for graduate scholars and researchers operating with sun phone know-how.

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The use of a heterosemiconductor as the active region in injection lasers, in addition to a decrease in the threshold current compared with that of lasers based on nano-heterostructures, ensures the stability of this parameter with temperature, increases the differential quantum efficiency and improves some other characteristics. The ‘construction’ of heterosemiconductors is a new semiconductor technology field. Therefore, new possibilities will also be opened for photovoltaic converters. It may be a ‘free design’ of materials for photoactive regions, in which the light absorption spectrum is modified in a definite way and the parameters affecting the charge carrier transfer are optimized.

Also, in the structures of multicascade photocells, in addition to the use of newly created materials with the desired absorption spectrum, it would probably be possible to improve the characteristics of commutating tunnel diodes (increase the peak current) by introducing superlattices created from vertically correlated dots between the n+ and p+ layers. It should be added that other proposals, including rather old ones, for the enhancement of photovoltaic converter efficiency, the realization of which necessitates ‘newly constructed’ materials, also exist.

2) of a large-scale application of the heteroface solar cells was a solar array with a total area of 70 m2 installed on the Russian space station ‘Mir’ (1986). Silicon and gallium arsenide, to a large extent, satisfy the conditions of ‘ideal’ semiconductor materials. 3). It is clear that the indubitable advantages of silicon are its wide natural abundance, non-toxicity and relatively low price. All these factors and the intensive development of the industrial production of semiconductor devices for use in the electronics industry have determined an extremely important role for silicon photocells in the formation of solar photovoltaics.

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