The concept of harnessing the power of the sun’s rays dates back to the 7th century BC years when magnifying glasses were used to make fire and reportedly burn ants! However, it wasn’t until 1839 when the photovoltaic effect was first discovered by a young French scientist, Edmond Becquerel. The photovoltaic effect is the underlying process by which solar panels work, and hence, Becquerel is credited with being the inventor of solar panels.
At the tender age of 19, Becquerel coated electrodes with silver chloride (AgCl) and silver bromide (AgBr) in an acidic solution, which generated voltage and current. Thanks to Becquerel’s experiments, the photovoltaic effect is sometimes referred to as the “Becquerel effect”.