Transcript Solar panels 271011

Solar panels are pretty expensive, but
they are good to save money on
electricity.
They take something from the sun and
do something with it to make it
power stuff.
Words
N-type semiconductor
A semiconductor type in which the density of holes in the
valence band is exceeded by the density of electrons in
the conduction band. N-type behaviour is induced by the
addition of donor impurities, such as arsenic or
phosphorus, to the crystal structure of silicon. In N-type
semiconductors, electrons are the majority carriers, and
holes are the minority carriers.
P-type semiconductor
A semiconductor type in which the density of electrons in the
conduction band is exceeded by the density of holes in the
valence band. P-type behaviour is induced by the addition of
acceptor impurities, such as boron, to the crystal structure of
silicon. In P-type semiconductors, holes are the majority
carriers, and electrons are the minority carriers.
Solar panels are big square disks that take
light energy from the sun and convert it to
a different type of energy called electricity.
A solar cell (also called photovoltaic cell
or photoelectric cell)is made of
monocrystalline silicon wafers
Solar panels are big square disks that take light energy from the sun and convert it to a
different type of energy called electricity. A solar cell (also called photovoltaic cell or
photoelectric cell)is made of monocrystalline silicon wafers