Abstract

Conversion of sunlight into electrical energy by the use of solar cells is by far the most important method of power supply for satellites. The physical principles underlying the photovoltaic energy conversion are briefly outlined. Performance characteristics of solar cells like conversion efficiency are derived from material data. Principle and technological necessary power loss factors are presented. The state-of-the-art of the present solar cell technology and recent developments are elucidated. Economical aspects are discussed especially concerning a possible application of photovoltaic energy conversion for terrestrial power supply.

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