Photovoltaics notes

Photovoltaics convert light into electricity using
semiconducting materials that produce the photovoltaic effect.

A solar panel, has a number of solar cells which generate electrical power.

Most photovoltaic systems are mounted on rooftops or on walls or are
stationary on the ground with solar panel fields.

And a solar tracker enables a solar panel to follow the sun.


Solar cell efficiency:
 Refers to the portion of energy in the form of sunlight
 that can be converted through photovoltaics into electricity.


Types of photovoltaics:
 Silicon
 -Amorphous -Monorphous and polymorphous
 Black silicon
 Perovskite
 And many more types

Tandem and multijunction cells like silicon-perovskite


Concentrator photovoltaics
 Uses lenses and curved mirrors to focus sunlight onto a small
 but highly efficient, multi junction solar cells.
 -Sometimes a tracker and a cooling system are also used


Extra:
Photovoltaics don't generate pollution and has no greenhouse gas
emissions once they are installed.