A solar cell, also known as a photovoltaic cell (PV cell), is an electronic device that converts the energy of light directly into electricity by means of the photovoltaic effect. It is a form of photoelectric cell, a device whose electrical characteristics (such as current, voltage, or resistance) vary when it is exposed to light. Assemblies of solar cells are used to make that generate electrical power from, as distinguished from a "solar thermal module" or "solar hot water panel". A solar array generates using Adjusting for inflation, it cost $96 per watt for a solar module in the mid-1970s. Process improvements and a very large boost in production have brought that figure down more than 99%, to 30¢ per watt in 2018 and as low as 20¢ per watt in 2020. Solar cell efficiency may be broken down into reflectance efficiency, thermodynamic efficiency, charge carrier separation efficiency and conductive efficiency. The overall efficiency is the product of these individual metrics. The Perovskite solar cells are solar cells that include a -structured material as the active layer. Most commonly, this is a solution-processed hybrid organic-inorganic tin or lead halide based material. Efficiencies have. The was experimentally demonstrated first by French physicist. In 1839, at age 19, he built the world's first photovoltaic cell in his father's laboratory. first described the "Effect of Light on Selenium during the passage of an. A solar cell is made of, such as, that have been fabricated into a. Such junctions are made by one side of the device p-type and the other n-type, for example in the case of silicon by introducing small. Solar cells are typically named after the they are made of. These must have certain characteristics in order to absorb. Some cells are designed to handle sunlight that reaches the Earth's surface, while others are.
