M6: EXPERIMENT: DIY EL SCREEN

This first experiment aimed to understand how do an Electroluminescent display works. Electroluminescence is a direct conversion of electric energy to light, and it happens when a solid phosphor is subjected to an strong alternating electric field, typically 90VAC @ 500Hz.  This is how it works: – The copper precipitates to form nanocrystals of copper sulfide. These enhance the strength of the electric field in the phosphor. – The zinc sulfide and silver form... Read More