09d9bdb1_den__Solar_Cells_Versus_Leaves__The_Solar_Cell
[0] Scientific Date [The Leaf] Science has studied photosynthesis since the 1600's, but it was not until the late 1800's that the first chemical description of photosynthesis was attempted. [The Solar Cell] 
The first working solar cell was created in 1883 by Charles Fritts. It was made from selenium coated with gold.
Experiment Garden: Solar Cells Versus Leaves
The Solar Cell