Featured in Keep on tracking – 12-2010

Better cells, cheaper cells

The story of solar electricity: The sixteenth part of our series of chapters from John Perlin’s book From Space to Earth examines different strategies of lowering the cost of photovoltaics.

To realize the dream of solar cells covering the world’s rooftops their price must drop. Many believe that this reduction will come only with changes in cell manufacture. Presently crystalline silicon remains the dominant photovoltaic material, basically the same substance that was discovered at Bell Laboratories in the early 1950s. Its continued widespread use rests …

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