päikesepatareideks
Päikesepatareideks, commonly known as solar cells or photovoltaic cells, are semiconductor devices that convert light energy directly into electricity through the photovoltaic effect. The fundamental principle behind their operation involves the interaction of photons from sunlight with the semiconductor material, typically silicon. When photons strike the solar cell, they excite electrons within the material, creating electron-hole pairs. An internal electric field within the cell then separates these charge carriers, with electrons flowing to one electrode and holes to another, generating a direct current (DC) electricity flow.
These cells are usually assembled into larger units called solar modules or solar panels, which can then
The efficiency of solar cells, meaning the percentage of sunlight they can convert into electricity, has steadily