Monday, October 28, 2019

Solar Cell

Solar cell or photovoltaic cell is the conversion of light energy to electrical Energy.Mainly its made up with P-N junction diode That having two types of doping in single Silicon chip.

Types of Solar Cell:
A PV cell can be either circular in construction or square.
Cells are arranged in a frame to form a module. Modules put
together form a panel. Panels form an array.
Each PV cell is rated for 0.5 – 0.7 volt and a current of 30mA/cm2.
rectangle solar

round shape

Crystalline cells are made from ultra-pure silicon raw material such as those used in
semiconductor chips. They use silicon wafers that are typically 150-200 microns (one fifth
of a millimetre) thick.
fig: crystal solar

Thin film is made by depositing layers of semiconductor material barely 0.3 to 2
micrometres thick onto glass or stainless steel substrates. As the semiconductor layers
are so thin, the costs of raw material are much lower than the capital equipment and
processing costs.
fig: Thin film solar


Photovoltaic cells are connected electrically in series and/or parallel circuits to produce higher voltages, currents and power levels.

• Photovoltaic modules consist of PV cell circuits and are the fundamental building blocks of PV systems. Photovoltaic panels include one or more Solar Cell.
PV modules assembled as a pre-wired, fieldinstallable
unit.
A photovoltaic array is the complete powergenerating
unit, consisting of any number of PV
modules and panels.



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