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Solar energy from spinach and toothpaste: fabrication of a solar cell in schools

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European Journal of Physics, 19 (1): 51-58 (1998)

Abstract

We will show how pupils can make a solar cell with spinach, toothpaste and a few other items found in any school laboratory. This device is called a Graetzel cell, and could trigger off a revolution in photovoltaic technology.

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