Solar cell composition and function

What are the main components of a solar cell?

A solar cell is made of two types of semiconductors called p-type and n-type silicon. The p-type silicon is produced by adding atoms—such as boron or gallium—that have one less electron in their outer energy level than does silicon.

How are solar cells used?

Learn about the makeup of solar cells and how they are used. Solar radiation is converted into direct current electricity by a photovoltaic cell, which is a semiconductor device. Since the sun is generally the source of radiation, they are often called solar cells.

How does a solar cell work?

The light enters the emitter first. The emitter is usually thin to keep the depletion region near where the light is strongly absorbed and the base is usually made thick enough to absorb most of the light. The basic steps in the operation of a solar cell are: the dissipation of power in the load and in parasitic resistances.

What are the characteristics of a solar cell?

The essential materials for solar cells must have a band gap close to 1.5 eV, high optical absorption, and electrical conductivity. Silicon is the most commonly used material for solar cells.

How are solar cells made?

Most solar cells are made from silicon. The silicon is processed into thin wafers and treated with special chemicals to create positive and negative layers. These layers form something called a p-n junction, which is key to generating electricity when sunlight hits the cell. What are the three types of solar cells?

What are solar cells?

Solar cells are a form of photoelectric cell, defined as a device whose electrical characteristics – such as current, voltage, or resistance – vary when exposed to light. A solar cell is basically a p-n junction diode. Individual solar cells can be combined to form modules commonly known as solar panels.