👉 In physics, a deuterotokus (also known as a light diode) is a type of diode that has two electrodes, one for electrons and another for tritium (which emits light). The name "deuterotokus" comes from the German word "deutert", which means "deuterium," and "tokus" refers to a device used in electronic circuits. These diodes are often used in photovoltaic cells, where they convert