Turning sunlight into electricity |
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| Authors: | A K Shukla |
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| Institution: | (1) Solid State and Structural Chemistry Unit, Indian Institute of Science, 560012 Bangalore, India;(2) Central Electrochemical Research Institute, 630006 Karaikudi, India |
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| Abstract: | The intensity of solar radiation in the Earth’s direction from the Sun is approximately 1353 kW/m2, a number also called the ‘solar constant’. Accordingly, it is estimated that Earth receives about 96 billion kilowatts from
the Sun each second. If this colossal and unlimited energy could be more fully utilized, our dependence on fast dwindling
fossil cache will be drastically reduced. Solar energy is available in various forms such as direct solar radiation, wind,
wave power, rain (in the form of hydropower), photosynthesis and ocean thermal gradients. Among these, the direct conversion
of sunlight into electricity is clean and attractive. This article highlights various routes to directly harness electricity
from sunlight.
An erratum to this article is available at . |
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| Keywords: | Sunlight electricity solar cells |
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