Figure 1. A solar panel, consisting of many photovoltaic cells. A photovoltaic (PV) cell is an energy harvesting technology, that converts solar energy into useful electricity through a process called the photovoltaic effect.
What are solar cells used for?
Historically solar cells have been used in situations where electrical power from the grid is unavailable, such as in remote area power systems, Earth orbiting satellites, consumer systems, e.g. handheld calculators or wrist watches, remote radio-telephones and water pumping applications.
What is solar cell and its uses?
Solar cells, also called photovoltaic cells, directly transform energy into electricity from the sun. Renewable energy is provided by solar cells, and they are durable, compact and low-maintenance. In remote environments, solar cells often generate electricity, powering machines far from the closest electrical outlet.
What are two uses of solar cells?
- Solar cells are used to convert light source from the sun into electrical energy.
- Solar cells are used in power farms to provide electricity to large areas.
- Solar cells used in vehicles like cars, buses etc. helps to save non-renewable fuel.
What are solar cells how do they work?
A solar cell is made up of two layers of silicon that are treated to let electricity flow through them when exposed to sunlight. One layer is positively charged, the other negatively charged. As photons enter the layers, they give up their energy to the atoms in the silicon in the form of electrons.
Who uses solar energy and for what purposes?
The most commonly used solar technologies for homes and businesses are solar photovoltaics for electricity, passive solar design for space heating and cooling, and solar water heating. Businesses and industry use solar technologies to diversify their energy sources, improve efficiency, and save money.
What is a solar cell give two examples of solar cell?
THE CELL WHICH USES SOLAR ENERGY TO CONVERT SOLAR INTO ELELTRICAL ENERGY .. The international space station is also another good example of solar cells being used in space. … Solar powered cars are cars which are powered by an array of photovoltaic cells.
How does pn junction solar cell work?
A solar cell is essential a PN junction with a large surface area. The N-type material is kept thin to allow light to pass through to the PN junction. … When a photon of light is absorbed by one of these atoms in the N-Type silicon it will dislodge an electron, creating a free electron and a hole.