Solar Panels for Sale - Home and Business - Solaris

Solar PV modules installed on a roof A solar panel, or photo-voltaic (PV) module, is an assembly of photo-voltaic cells mounted in a framework for installation. Photovoltaic panel use sunshine as a source of energy to produce direct current electrical energy. A collection of PV modules is called a PV panel, and a system of panels is a selection.

History [modify] In 1839, the ability of some materials to develop an electrical charge from light exposure was first observed by Alexandre-Edmond Becquerel. Though the premiere photovoltaic panels were too inefficient for even easy electric devices they were utilized as an instrument to determine light. A Good Read by Becquerel was not duplicated again till 1873, when Willoughby Smith found that the charge could be triggered by light striking selenium.

In 1881, Charles Fritts produced the very first commercial photovoltaic panel, which was reported by Fritts as "constant, constant and of considerable force not just by exposure to sunshine but likewise to dim, diffused daylight." Nevertheless, these solar panels were really ineffective, particularly compared to coal-fired power plants. In 1939, Russell Ohl developed the solar battery design that is utilized in numerous modern photovoltaic panels.

In 1954, this design was initially used by Bell Labs to create the first commercially practical silicon solar cell. In 1957, Mohamed M. Atalla developed the process of silicon surface passivation by thermal oxidation at Bell Labs. The surface area passivation process has since been important to solar battery performance. Theory and building and construction [edit] Photovoltaic modules utilize light energy (photons) from the Sun to create electrical energy through the photovoltaic result.

The structural (load carrying) member of a module can be either the leading layer or the back layer. Cells need to be safeguarded from mechanical damage and moisture. A lot of modules are stiff, but semi-flexible ones based on thin-film cells are likewise offered. The cells are generally linked electrically in series, one to another to the preferred voltage, and then in parallel to increase existing.

The manufacture specs on photovoltaic panels are acquired under standard condition which is not the real operating condition the solar panels are exposed to on the installation site. A PV junction box is connected to the back of the photovoltaic panel and functions as its output user interface. External connections for the majority of photovoltaic modules utilize MC4 connectors to assist in easy weatherproof connections to the remainder of the system.