A brief history of Silicon found
In 1787, Lavoisier first discovery of Silicon present in rocks.
In 1800, David will mistake its a compound.
1811 cover-Lussac and Thenard (Thenard, Louis Jacques) heating of potassium with Silicon Tetrafluoride are impure amorphous silicon, according to the Latin word Silex (flint) named Silicon.
In 1811, Gay-Lussac and Thenard in Silicon (SI) of four fluoride reacts with alkaline-earth metal found in the reaction generated red-brown compound (possibly containing impure amorphous silicon).