Päikesepatarei

Päikesepatarei, also known as a solar cell or photovoltaic cell, is an electronic device that converts light energy into electrical energy through the photovoltaic effect. The most common type of päikesepatarei is made from semiconductor materials, typically silicon. When photons from sunlight strike the päikesepatarei, they excite electrons in the semiconductor material, causing them to flow and generate an electric current. This direct current can then be used to power devices or stored in batteries.

Päikesepatareid are the fundamental building blocks of solar panels, which are arrays of many individual päikesepatareid connected together. These solar panels are widely used for a variety of applications, ranging from powering small electronic devices like calculators and watches to large-scale solar farms that generate electricity for entire communities. The efficiency of a päikesepatarei refers to the percentage of sunlight it can convert into electricity. Ongoing research and development are focused on improving efficiency, reducing manufacturing costs, and exploring new materials for even more effective solar energy conversion. The use of päikesepatareid is a key component in the transition towards renewable energy sources and reducing reliance on fossil fuels.