Characteristics Solar Panel

A solar module can be seen as a black box that with two connectors producing a current i at a voltage u.

Characteristics solar panel.

The graph is called an i v curve and it refers to the module s output relationship between current i and voltage v under prevailing conditions of sunlight and temperature. The curve looks like a seated person s leg. They are solid black without the normal silicon cell outlines you see on the face of a crystalline solar panel. Working of a solar cell.

Many are familiar with so called photovoltaic cells or solar panels found on things like spacecraft rooftops and handheld calculators. A semiconductor p n junction is in the middle of these two contacts. Usually thin film solar panels are lightweight and flexible making them easy to install. The total amount of solar energy incident on earth is vastly in excess of the world s energy requirements and could satisfy all future energy needs if suitably harnessed.

The back sheet of the solar panel will most often be black silver or white while the metal frames are typically black or silver. Typically a solar or photovoltaic cell has negative front contact and positive back contact. The sunlight is a group of photons having a finite amount of energy. This maximum current is known as the short circuit current and is abbreviated as isc.

Sun power panels are made of copper indium diselenide. The absorption depends on the energy of the photon and the band gap energy of the solar semiconductor material and it is expressed in electron volt ev. A solar pv cell or a panel module produces its maximum current when there is no resistance in the circuit i e. For the generation of electricity by the cell it must absorb the energy of the photon.

For the purpose of the electrical characteristics of a solar cell the inside of that black box can be described by an electric cicuit with only 4components. Thin film solar panels are completely different from monocrystalline and polycrystalline solar panels. They are 60mm 2 3 8 square with nominal 4 5 v oc and 90ma i sc in full sunlight. When there is a short circuit between its positive and negative terminals.

Every model of solar panel has unique performance characteristics which can be graphically represented in a chart. The cells are made of semiconductor materials like those. While the solar cells themselves are black monocrystalline solar panels have a variety of colors for their back sheets and frames. The following are a few sources for solar panels.

Just about any panel or combination of panels that provide between 5v and 9 v and current up to 100 ma will work for these lab and related activities. Electrical characteristics of pv modules. Two of these small panels could be used in series.